134 results on '"Chi-Wen Chang"'
Search Results
2. Biomedical Evaluation of Early Chronic Kidney Disease in the Air Force: Building a Predictive Model from the Taiwan Military Health Service
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Po-Jen Hsiao, Ruei-Lin Wang, Fu-Kang Hu, Fu-Ru Tsai, Chih-Chien Chiu, Wen-Fang Chiang, Kun-Lin Wu, Yuan-Kuei Li, Jenq-Shyong Chan, Chi-Ming Chu, and Chi-Wen Chang
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Air Force ,chronic kidney disease ,predictive model ,military health ,Technology ,Biology (General) ,QH301-705.5 - Abstract
Objective: Chronic kidney disease (CKD) is one of the most common diseases worldwide. The increasing prevalence and incidence of CKD have contributed to the critical problem of high medical costs. Due to stressful environments, aircrew members may have a high risk of renal dysfunction. A better strategy to prevent CKD progression in Air Force personnel would be to diagnosis CKD at an early stage. Since few studies have been conducted in Taiwan to examine the long-term trends in early CKD in Air Force aircrew members, this study is highly important. We investigated the prevalence of CKD and established a predictive model of disease variation among aircrew members. Materials and Methods: In this retrospective study, we included all subjects who had received physical examinations at a military hospital from 2004 to 2010 and who could be tracked for four years. The Abbreviated Modification of Diet in Renal Disease Formula (aMDRD) was used to estimate the glomerular filtration rate (GFR) and was combined with the National Kidney Foundation/ Kidney Disease Outcomes Quality Initiative (NKF-K/DOQI) to identify CKD patients. Results: A total of 212 aircrew members were assessed. The results showed that the prevalence of CKD was 3.8%, 9.4%, 9.0%, and 9.4% in each of the four years. According to the logistic regression analysis, abnormal urobilinogen levels, ketones, and white blood cell (WBC) counts in urine and a positive urine occult blood test increased the risk of CKD. A positive urine occult blood test can be used to predict the future risk of CKD. Moreover, the generalized estimating equation (GEE) model showed that a greater risk of CKD with increased examination time, age and seniority had a negative effect. In conclusion, abnormal urobilinogen levels, ketones, and urine WBC counts in urine as well as a positive urine occult blood test might serve as independent predictors for CKD. Conclusion: In the future, we can focus not only on annual physical examinations but also on simple and accurate examinations, such as urine occult blood testing, to determine the risk of CKD and prevent its progression in our aircrew members.
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- 2024
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3. Genetic co-expression networks contribute to creating predictive model and exploring novel biomarkers for the prognosis of breast cancer
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Chi-Ming Chu, Huan-Ming Hsu, Chi-Wen Chang, Yuan-Kuei Li, Yu-Jia Chang, Jyh-Cherng Yu, Chien-Ting Chen, Chen-En Jian, Meng-Chiung Lin, Kang-Hua Chen, Ming-Hao Kuo, Chia-Shiang Cheng, Ya-Ting Chang, Yi-Syuan Wu, Hao-Yi Wu, Ya-Ting Yang, Je-Ming Hu, and Yu-Tien Chang
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Medicine ,Science - Abstract
Abstract Genetic co-expression network (GCN) analysis augments the understanding of breast cancer (BC). We aimed to propose GCN-based modeling for BC relapse-free survival (RFS) prediction and to discover novel biomarkers. We used GCN and Cox proportional hazard regression to create various prediction models using mRNA microarray of 920 tumors and conduct external validation using independent data of 1056 tumors. GCNs of 34 identified candidate genes were plotted in various sizes. Compared to the reference model, the genetic predictors selected from bigger GCNs composed better prediction models. The prediction accuracy and AUC of 3 ~ 15-year RFS are 71.0–81.4% and 74.6–78% respectively (rfm, ACC 63.2–65.5%, AUC 61.9–74.9%). The hazard ratios of risk scores of developing relapse ranged from 1.89 ~ 3.32 (p
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- 2021
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4. The Effectiveness of the Buzzy Device for Pain Relief in Children During Intravenous Injection: Quasirandomized Study
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Yen-Hua Cho, Yi-Chien Chiang, Tsung-Lan Chu, Chi-Wen Chang, Chun-Chu Chang, and Hsiu-Min Tsai
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Pediatrics ,RJ1-570 - Abstract
BackgroundIntravenous injection is the most common medical treatment and the main cause of pain in hospitalized children. If there is no appropriate health care for pain relief, the proportion of moderate and severe pain often exceeds 70%. With nonpharmaceutical-based pain management, Buzzy is recognized as an effective device for rapidly relieving injection pain in hospitalized children. However, Buzzy is not widely used in Asia and very few experimental studies in Asia have addressed the effectiveness of the Buzzy device at treating needle pain in hospitalized children. ObjectiveThe main purpose of this study was to investigate the effectiveness of the Buzzy device for diminishing pain levels among hospitalized children in Taiwan. MethodsWe applied a quasiexperimental design with random assignment. According to the time of admission, child participants were randomly assigned to treatment and nontreatment groups. The Buzzy device was applied as an intervention in this study. The samples size was 30 per group. The study participants were recruited from the pediatric ward of a medical center in northern Taiwan. The research data were collected longitudinally at three time points: before, during, and after intravenous injection. Three instruments were used for assessment: a demographic information sheet, the Wong-Baker Face Scale (WBFS), and the Faces Legs Activity Cry Consolability (FLACC) scale. The data were analyzed by descriptive analysis, the Mann-Whitney U test, the Wilcoxon signed-rank test, and the χ2 test. ResultsA total of 60 hospitalized children aged 3 to 7 years participated in this study, including 30 participants in the treatment group and 30 participants in the nontreatment group. The average age of children in the treatment and nontreatment groups was 5.04 years and 4.38 years, respectively. Buzzy significantly mitigated pain in children during intravenous injection with a significant difference between the two groups in pain-related response (FLACC) and actual pain (WBFS) (Z=–3.551, P
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- 2022
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5. From Bench to Bedside: Clinical and Biomedical Investigations on Hepatitis C Virus (HCV) Genotypes and Risk Factors for Albuminuria
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Po-Jen Hsiao, Chia-Jen Hsiao, Fu-Ru Tsai, Yen-Lin Hou, Chih-Chien Chiu, Wen-Fang Chiang, Kun-Lin Wu, Yuan-Kuei Li, Chen Lin, Jenq-Shyong Chan, Chi-Wen Chang, and Chi-Ming Chu
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hepatitis C virus (HCV) genotype ,albuminuria ,proteinuria ,nephropathies ,chronic kidney disease (CKD) ,National Health and Nutrition Examination Survey (NHANES) ,Technology ,Biology (General) ,QH301-705.5 - Abstract
An extrahepatic manifestation of nephropathies can be a feature of the chronic hepatitis C virus (HCV) infection. Albuminuria is a major risk factor for nephropathies and chronic kidney disease (CKD). The correlation between HCV genotypes and albuminuria is still unclear. In this study, investigations have been done for the biomedical tools and methodologies used in the National Health and Nutrition Examination Survey (NHANES) public database. We searched the 2007–2016 NHANES public database to retrieve data regarding the different HCV genotypes and clinical scenarios. This study attempted to investigate the impacts of HCV genetic diversity, associated comorbidities, and racial differences on albuminuria. The urine albumin/creatinine ratio (ACR) was the primary endpoint. Among 40,856 participants, 336 participants with positive and 237 with negative HCV RNA tests were analyzed, excluding 14,454 participants with negative HCV antibodies and 25,828 which were missed. After controlling for sex, race, education level, smoking, diabetes mellitus, hepatitis B, alcohol use, and body mass index (BMI) with a generalized linear equation, HCV genotype 2 was more likely than any other genotype to cause albuminuria based on the urine ACR (p < 0.001). The generalized linear equation also demonstrated a significantly higher urine ACR, including hepatitis B (p < 0.001), diabetes mellitus (p < 0.001), and smoking (p = 0.026). In summary, the patients with HCV genotype 2 presented with increased albuminuria in comparison with other HCV genotypes in this 10-year retrospective analysis. HCV infection could be a risk factor of CKD; early diagnosis and appropriate treatment may improve clinical outcomes.
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- 2022
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6. Emergence of a butterfly: the life experiences of type 1 diabetes Taiwanese patients during the 16–25 years old transition period
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Yueh-Tao Chiang, Hsing-Yi Yu, Fu-Sung Lo, Chi-Wen Chen, Tzu-Ting Huang, Chi-Wen Chang, and Philip Moons
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type1 diabetes ,life experiences ,transition ,adolescent ,young adults ,nursing ,qualitative ,Medicine (General) ,R5-920 - Abstract
Purpose: To explore the life experiences of patients with type 1 diabetes transition from adolescence into adulthood in Taiwan. Methods: Descriptive phenomenological design was used. Fourteen participants were individually interviewed using a semi-structured interview. Results: The life experiences of patients with type 1 diabetes transition from adolescence into adulthood experience a metamorphosis from awareness of responsibility to figuring out a way to care for themselves. Six themes emerged: (1) hibernation: awareness of responsibility; (2) emergence: attempts to take responsibility; (3) perseverance: encountering difficulties; (4) anxiety: multiple worries; (5) hesitation: back-and-forth,” and (6) exit: finding a way out.” Conclusions: During the transition phase, the participants experienced the trials of various situations. Regardless of whether they are able to independently bear the responsibilities of self-management, they all hope to turn around the challenges of disease control and take ownership of their disease. Like a butterfly that emerges from a cocoon, they hoped to overcome the dangers of taking flight through trial and error and navigating the world. The results of this study can serve as a reference for clinical care and developing localized intervention strategies targeted to the transition period between adolescence and young adulthood.
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- 2020
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7. Publisher Correction: Genetic co-expression networks contribute to creating predictive model and exploring novel biomarkers for the prognosis of breast cancer
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Yuan-Kuei Li, Huan-Ming Hsu, Meng-Chiung Lin, Chi-Wen Chang, Chi-Ming Chu, Yu-Jia Chang, Jyh-Cherng Yu, Chien-Ting Chen, Chen-En Jian, Chien-An Sun, Kang-Hua Chen, Ming-Hao Kuo, Chia-Shiang Cheng, Ya-Ting Chang, Yi-Syuan Wu, Hao-Yi Wu, Ya-Ting Yang, Chen Lin, Hung-Che Lin, Je-Ming Hu, and Yu-Tien Chang
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Medicine ,Science - Abstract
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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- 2021
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8. Primary conus medullaris germinoma: A 22-year follow-up
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Chi-Wen Chang, Jung-Shun Lee, and Hsing-Hong Chen
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Conus medullaris germinoma ,primary intramedullary spinal cord germinoma ,radiotherapy ,Surgery ,RD1-811 - Abstract
Primary intramedullary spinal cord germinoma (PISCG) is very rare, and its preoperative diagnosis is therefore difficult. In addition, its treatment protocols and long-term outcomes are not yet established. Here, we report the case of a patient with a primary conus medullaris germinoma who initially presented with ejaculatory disturbance and coccygeal hypoesthesia. After the total excision of the germinoma and radiotherapy, no tumor recurrence was noted for 22 years. We have also reviewed the distribution of PISCG in spinal segments and its treatment modalities.
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- 2017
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9. Albuminuria and neck circumference are determinate factors of successful accurate estimation of glomerular filtration rate in high cardiovascular risk patients.
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Po-Jen Hsiao, Hung-Che Lin, Shih-Tai Chang, Jen-Te Hsu, Wei-Shiang Lin, Chang-Min Chung, Jung-Jung Chang, Kuo-Chun Hung, Yun-Wen Shih, Fu-Chi Chen, Fu-Kang Hu, Yi-Syuan Wu, Chi-Wen Chang, Sui-Lung Su, and Chi-Ming Chu
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Medicine ,Science - Abstract
Estimated glomerular filtration rate (eGFR) is used for diagnosis of chronic kidney disease (CKD). The eGFR models based on serum creatinine or cystatin C are used more in clinical practice. Albuminuria and neck circumference are associated with CKD and may have correlations with eGFR.We explored the correlations and modelling formulates among various indicators such as serum creatinine, cystatin C, albuminuria, and neck circumference for eGFR.Cross-sectional study.We reviewed the records of patients with high cardiovascular risk from 2010 to 2011 in Taiwan. 24-hour urine creatinine clearance was used as the standard. We utilized a decision tree to select for variables and adopted a stepwise regression method to generate five models. Model 1 was based on only serum creatinine and was adjusted for age and gender. Model 2 added serum cystatin C, models 3 and 4 added albuminuria and neck circumference, respectively. Model 5 simultaneously added both albuminuria and neck circumference.Total 177 patients were recruited in this study. In model 1, the bias was 2.01 and its precision was 14.04. In model 2, the bias was reduced to 1.86 with a precision of 13.48. The bias of model 3 was 1.49 with a precision of 12.89, and the bias for model 4 was 1.74 with a precision of 12.97. In model 5, the bias could be lower to 1.40 with a precision of 12.53.In this study, the predicting ability of eGFR was improved after the addition of serum cystatin C compared to serum creatinine alone. The bias was more significantly reduced by the calculation of albuminuria. Furthermore, the model generated by combined albuminuria and neck circumference could provide the best eGFR predictions among these five eGFR models. Neck circumference can be investigated potentially in the further studies.
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- 2018
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10. Survival factors of hospitalized out-of-hospital cardiac arrest patients in Taiwan: A retrospective study.
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Chung-Yu Lai, Fu-Huang Lin, Hsin Chu, Chih-Hung Ku, Shih-Hung Tsai, Chi-Hsiang Chung, Wu-Chien Chien, Chun-Hsien Wu, Chi-Ming Chu, and Chi-Wen Chang
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Medicine ,Science - Abstract
The chain of survival has been shown to improve the chances of survival for victims of cardiac arrest. Post-cardiac arrest care has been demonstrated to significantly impact the survival of out-of-hospital cardiac arrest (OHCA). How post-cardiac arrest care influences the survival of OHCA patients has been a main concern in recent years. The objective of this study was to assess the survival outcome of hospitalized OHCA patients and determine the factors associated with improved survival in terms of survival to discharge. We conducted a retrospective observational study by analyzing records from the National Health Insurance Research Database of Taiwan from 2007 to 2013. We collected cases with an International Classification of Disease Clinical Modification, 9th revision primary diagnosis codes of 427.41 (ventricular fibrillation, VF) or 427.5 (cardiac arrest) and excluded patients less than 18 years old, as well as cases with an unknown outcome or a combination of traumatic comorbidities. We then calculated the proportion of survival to discharge among hospitalized OHCA patients. Factors associated with the dependent variable were examined by logistic regression. Statistical analysis was conducted using SPSS 22 (IBM, Armonk, NY). Of the 11,000 cases, 2,499 patients (22.7%) survived to hospital discharge. The mean age of subjects who survived to hospital discharge and those who did not was 66.7±16.7 and 71.7±15.2 years, respectively. After adjusting for covariates, neurological failure, cardiac comorbidities, hospital level, intensive care unit beds, transfer to another hospital, and length of hospital stay were independent predictors of improved survival. Cardiac rhythm on admission was a strong factor associated with survival to discharge (VF vs. non-VF: adjusted odds ratio: 3.51; 95% confidence interval: 3.06-4.01). In conclusion, cardiac comorbidities, hospital volume, cardiac rhythm on admission, transfer to another hospital and length of hospital stay had a significant positive association with survival to discharge in hospitalized OHCA patients in Taiwan.
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- 2018
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11. Risk analysis of colorectal cancer incidence by gene expression analysis
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Wei-Chuan Shangkuan, Hung-Che Lin, Yu-Tien Chang, Chen-En Jian, Hueng-Chuen Fan, Kang-Hua Chen, Ya-Fang Liu, Huan-Ming Hsu, Hsiu-Ling Chou, Chung-Tay Yao, Chi-Ming Chu, Sui-Lung Su, and Chi-Wen Chang
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Cancer ,Microarray analysis ,Gene expression ,Gene ontology ,Prediction analysis for microarrays ,Medicine ,Biology (General) ,QH301-705.5 - Abstract
Background Colorectal cancer (CRC) is one of the leading cancers worldwide. Several studies have performed microarray data analyses for cancer classification and prognostic analyses. Microarray assays also enable the identification of gene signatures for molecular characterization and treatment prediction. Objective Microarray gene expression data from the online Gene Expression Omnibus (GEO) database were used to to distinguish colorectal cancer from normal colon tissue samples. Methods We collected microarray data from the GEO database to establish colorectal cancer microarray gene expression datasets for a combined analysis. Using the Prediction Analysis for Microarrays (PAM) method and the GSEA MSigDB resource, we analyzed the 14,698 genes that were identified through an examination of their expression values between normal and tumor tissues. Results Ten genes (ABCG2, AQP8, SPIB, CA7, CLDN8, SCNN1B, SLC30A10, CD177, PADI2, and TGFBI) were found to be good indicators of the candidate genes that correlate with CRC. From these selected genes, an average of six significant genes were obtained using the PAM method, with an accuracy rate of 95%. The results demonstrate the potential of utilizing a model with the PAM method for data mining. After a detailed review of the published reports, the results confirmed that the screened candidate genes are good indicators for cancer risk analysis using the PAM method. Conclusions Six genes were selected with 95% accuracy to effectively classify normal and colorectal cancer tissues. We hope that these results will provide the basis for new research projects in clinical practice that aim to rapidly assess colorectal cancer risk using microarray gene expression analysis.
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- 2017
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12. Androgenic alopecia is associated with less dietary soy, lower [corrected] blood vanadium and rs1160312 1 polymorphism in Taiwanese communities.
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Ching-Huang Lai, Nain-Feng Chu, Chi-Wen Chang, Shu-Li Wang, Hsin-Chou Yang, Chi-Ming Chu, Chu-Ting Chang, Ming-Huang Lin, Wu-Chien Chien, Sui-Lung Su, Yu-Ching Chou, Kang-Hua Chen, Wei-Ming Wang, and Saou-Hsing Liou
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Medicine ,Science - Abstract
Although the genetic basis of androgenic alopecia has been clearly established, little is known about its non-genetic causes, such as environmental and lifestyle factors.This study investigated blood and urine heavy metals concentrations, environmental exposure factors, personal behaviors, dietary intakes and the genotypes of related susceptibility genes in patients with androgenic alopecia (AGA).Age, AGA level, residence area, work hours, sleep patterns, cigarette usage, alcohol consumption, betel nut usage, hair treatments, eating habits, body heavy metals concentrations and rs1998076, rs913063, rs1160312 and rs201571 SNP genotype data were collected from 354 men. Logistic regression analysis was performed to examine whether any of the factors displayed odds ratios (ORs) indicating association with moderate to severe AGA (≥ IV). Subsequently, Hosmer-Lemeshow, Nagelkerke R(2) and accuracy tests were conducted to help establish an optimal model.Moderate to severe AGA was associated with the AA genotype of rs1160312 (22.50, 95% CI 3.99-126.83), blood vanadium concentration (0.02, 95% CI 0.01-0.04), and regular consumption of soy bean drinks (0.23, 95% CI 0.06-0.85), after adjustment for age. The results were corroborated by the Hosmer-Lemeshow test (P = 0.73), Nagelkerke R(2) (0.59), accuracy test (0.816) and area under the curve (AUC; 0.90, 0.847-0.951) analysis.Blood vanadium and frequent soy bean drink consumption may provide protect effects against AGA. Accordingly, blood vanadium concentrations, the AA genotype of rs1160312 and frequent consumption of soy bean drinks are associated with AGA.
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- 2013
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13. Population-based study of birth prevalence and factors associated with cleft lip and/or palate in Taiwan 2002-2009.
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Ruoh-Lih Lei, Huey-Shys Chen, Bao-Yuan Huang, Yueh-Chih Chen, Philip Kuo-Ting Chen, Huei-Ying Lee, Chi-Wen Chang, and Chih-Lung Wu
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Medicine ,Science - Abstract
BACKGROUND: Facial cleft deformities, including cleft lip with or without cleft palate (CL/P) and cleft palate (CP), are common congenital birth anomalies, especially in Asia. This study aimed to analyze the prevalence of CL/P and CP and to identify associated factors in Taiwan. METHODS: This population-based epidemiological study retrospectively analyzed birth data obtained from the Department of Health in Taiwan for years 2002-2009. Frequency distribution, percentages and related predictors were investigated, and findings were presented by types of cleft deformities. Logistic regression analysis was performed to identify factors associated with cleft deformities. RESULTS: Overall prevalence of cleft deformities among 1,705,192 births was 0.1% for CL/P and 0.04% for CP over the 8-year study period. Higher prevalence of CL/P or CP was observed with multiple pregnancies, being male for CL/P, being female for CP, gestational age ≤37 weeks and lower birth weight (
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- 2013
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14. Exploring the Value of Cloud Services and QoE Factors on IPCentrex via the Means-End Chain Framework.
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Yu-Lung Wu, Chi-Wen Chang, and Chi-Jui Chang
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- 2014
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15. Online cutting temperature prediction using ink-jet printed sensors and model order reduction method
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Kuan-Ming Li, Chi-Wen Chang, and Chia-Hao Chang
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Control and Systems Engineering ,Mechanical Engineering ,Industrial and Manufacturing Engineering ,Software ,Computer Science Applications - Published
- 2022
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16. Changes in family functioning among primary family caregivers of patients with schizophrenia
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Chiu‐Yueh Hsiao, Ming‐Hong Hsieh, Feng‐Chin Chung, Shu‐Chuan Chiu, Chi‐Wen Chang, and Yun‐Fang Tsai
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General Nursing - Published
- 2023
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17. Trends and Risk Factors for Healthcare-Associated Vancomycin-Resistant Enterococci of Urinary Tract Infections in Taiwan
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Fu-Kang Hu, Chih-Chien Cheng, Fu-Huang Lin, Sung-Teng Hsu, Ng Daphne Yih, Feng-Yee Chang, Chi-Wen Chang, Wu-Chien Chien, Li-Yun Fann, and Chi-Ming Chu
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Purpose: Vancomycin can be used to treat many bacterial infections, although the generation of vancomycin-resistant Enterococci (VRE) may cause adverse consequences. We analysed the trends and the risk factors for healthcare-associated urinary tract infections (UTIs) by VRE. Methods: This retrospective study included patients who were hospitalized from 2009–2015 and had hospital-acquired enterococci infections who fulfilled the Centers for Disease Control and Ministry of Health and Welfare criteria, as determined by infection control professionals. Results: The mean age of the 594 participants was 72.3 years. The proportion of men with enterococcal UTIs was 70%. The proportion of VRE infections among all enterococcal UTIs was lowest in 2009 (18.1%) and highest in 2015 (47.3%). An increasing trend in the proportion of patients with VRE UTIs was observed from 2009–2015. Length of hospitalization of more than 40 days, placement of double-lumen catheters, and placement of a nasogastric tube were associated with a higher risk of VRE in UTIs (odds ratio=1.93–2.72, all P Conclusions: The use of unnecessary invasive catheters in patients with double-lumen catheters or nasogastric tubes should be reduced. Environmental disinfection and hand hygiene should be implemented.
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- 2023
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18. Depth-Enhanced Error Concealment for H.264 Video.
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Shih-Hsuan Yang, Chia-Ling Chu, and Chi-Wen Chang
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- 2015
19. An object-based error concealment technique for H.264 coded video.
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Shih-Hsuan Yang, Chi-Wen Chang, and Chih-Chieh Chan
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- 2015
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20. Developing the 'Healthcare CEO App' for patients with type 1 diabetes transitioning from adolescence to young adulthood: A mixed-methods study
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Yueh‐Tao Chiang, Chi‐Wen Chang, Hsing‐Yi Yu, Pei‐Kwei Tsay, Fu‐Sung Lo, Chi‐Wen Chen, Wen‐Yen Lin, Chien‐Lung Hsu, Chi An, and Philip Moons
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Science & Technology ,Nursing ,CONSENSUS ,Life Sciences & Biomedicine ,General Nursing - Abstract
AIM: To develop and test a mobile application that supports the disease self-management of adolescents with type 1 diabetes during their transition to early adulthood. DESIGN: A sequential mixed-methods design was employed. METHODS: The application content was designed according to previously identified care needs and expectations, followed by application development on the Android operating system. From the outpatient clinic of the Department of Paediatric Endocrinology and Metabolism at a medical centre in northern Taiwan, 35 individuals aged between 16-25 years participated in application testing. RESULTS: The overall median score of the QUIS was 4-5, most of the 25% quartile was 4-5, and all of the 75% quartile was 5, indicating adequate user interaction satisfaction. ispartof: NURSING OPEN vol:10 issue:3 pages:1755-1766 ispartof: location:United States status: published
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- 2022
21. Gender-Specific Determinants of eHealth Literacy: Results from an Adolescent Internet Behavior Survey in Taiwan
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Chia-Shiang Cheng, Yi-Jen Huang, Chien-An Sun, Chi An, Yu-Tien Chang, Chi-Ming Chu, and Chi-Wen Chang
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Male ,Internet ,Adolescent ,Health, Toxicology and Mutagenesis ,education ,Public Health, Environmental and Occupational Health ,Taiwan ,eHealth Literacy ,gender health information ,Article ,internet rumors ,Telemedicine ,Health Literacy ,adolescent ,internet ,Cross-Sectional Studies ,Surveys and Questionnaires ,Medicine ,Humans ,Female - Abstract
Adolescents’ Internet health information usage has rarely been investigated. Adolescents seek all kinds of information from the Internet, including health information, which affects their Health Literacy that eHealth Literacy (eHL). This study is a retrospective observational study, we have total of 500 questionnaires were distributed, 87% of which were recovered, and we explored the channels that adolescents use to search for health information, their ability to identify false information, and factors affecting the type and content of health information queried. Adolescents believe that the Internet is a good means to seek health information because of its instant accessibility, frequent updating, convenience, and lack of time limits. More boys use the Internet to seek health information than girls in junior high schools (p = 0.009). The Internet is an important source of health information for adolescents but contains extensive misinformation that adolescents cannot identify. Additionally, adolescent boys and girls are interested in different health issues. Therefore, the government should implement measures to minimize misinformation on the Internet and create a healthy, educational online environment to promote Adolescents’ eHealth Literacy (eHL).
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- 2022
22. Possible involvement of MAP kinase pathways in acquired metal-tolerance induced by heat in plants
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Chen, Po-Yu, Lee, Kuo-Ting, Chi, Wen-Chang, Hirt, Heribert, Chang, Ching-Chun, and Huang, Hao-Jen
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- 2008
23. Developing the 'Healthcare CEO App' for Patients with Type 1 Diabetes Transitioning from Adolescence to Young Adulthood: A Mixed-Methods Study (Preprint)
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Yueh-Tao Chiang, Chi-Wen Chang, Hsing-Yi Yu, Pei-Kwei Tsay, Fu-Sung Lo, Chi-Wen Chen, Wen-Yen Lin, Chien-Lung Hsu, and Philip Moons
- Abstract
BACKGROUND Adolescents with type 1 diabetes face various challenges which are often associated with poor blood glucose control during their transition to early adulthood. Using appropriate mobile applications for health management can improve the efficiency of disease self-management. OBJECTIVE To develop and test a mobile application that supports the disease self-management of adolescents with type 1 diabetes during their transition to early adulthood. METHODS A sequential mixed-methods design was employed. The application content was designed according to previously identified care needs and expectations, followed by application development on the Android operating system. From the outpatient clinic of the Department of Pediatric Endocrinology and Metabolism at a medical center in northern Taiwan, 35 individuals aged between 16 and 25 years participated in application testing. RESULTS The final application consisted of 11 interfaces, namely: CEO’s Profile, Health Tracking, CEO Knowledge Base, Barrier-free Communication, See Here: Diet and Exercise, Help Me, Detective!, CEO Chat Room, CEO's Secretary, SOS Calls, Q & A, and Who’s the Best CEO . The average user interaction satisfaction score of the application was 4.54 (± 0.41), indicating positive interaction satisfaction. CONCLUSIONS In this study, we developed the Healthcare Chief Executive Officer application tailored to the needs of patients with type 1 diabetes in the transition period. The application can support the disease self-management of adolescents with type 1 diabetes in the transition period, as well as provide references for clinical intervention. CLINICALTRIAL Future research will use a randomized controlled trial (RCT) design to evaluate the effectiveness of the application. Trial registration: listed on ClinicalTrials.gov, identifier: NCT05022875.
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- 2021
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24. The Mediating Effects of Nursing Professional Commitment on the Relationship between Social Support, Resilience, and Intention to Stay among Newly Graduated Male Nurses: A Cross-Sectional Questionnaire Survey
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Chunhsia Huang, Yueh Tao Chiang, Yen Fan Chin, Hsing-Yi Yu, Yungchao Shen, Chi-Wen Chang, and Jiunnhorng Lou
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Male ,Attitude of Health Personnel ,Health, Toxicology and Mutagenesis ,media_common.quotation_subject ,newly graduated male nurses ,Nurses ,Personnel Turnover ,Economic shortage ,Intention ,Computer-assisted web interviewing ,Nursing Staff, Hospital ,Job Satisfaction ,Article ,03 medical and health sciences ,Social support ,0302 clinical medicine ,Nursing ,Global issue ,Professional commitment ,Surveys and Questionnaires ,nursing professional commitment ,Humans ,030212 general & internal medicine ,media_common ,030504 nursing ,Public Health, Environmental and Occupational Health ,Social Support ,Questionnaire ,intention to stay ,Nurses, Male ,Cross-Sectional Studies ,Snowball sampling ,Medicine ,Female ,Psychological resilience ,0305 other medical science ,Psychology ,Job Demands-Resources (JD-R) model - Abstract
The current shortage of nurses is an important global issue. Most male nurses leave nursing within four years of starting their nursing career. It is crucial to understand the influencing factors on newly graduated male nurses staying in nursing. Previous studies on intentions to stay as nurses were seldom based on theory and failed to consider the differences between genders. Based on the Job Demands-Resources (JD-R) model, this study tested the model that social support, resilience, and nursing professional commitment influence the intention to stay and the mediating effect of nursing professional commitment in the above relationship. This cross-sectional study adopted purposive and snowball sampling methods. Data were collected using online questionnaire, and 272 newly graduated male nurses completed it. The hypothetical model had a good fit with the data. Nursing professional commitment had a complete mediating effect between social support and intention to stay and between resilience and intention to stay. Nursing professional commitment was highly positively correlated to intention to stay. It is suggested that future research and practice should enhance male nurses’ professional commitment to increase their intention to stay. The findings can serve as reference for developing newly graduated male nurse retention programs.
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- 2021
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25. Six novel immunoglobulin genes as biomarkers for better prognosis in triple-negative breast cancer by gene co-expression network analysis
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Yu Tien Chang, Chia Yi Lee, Huan Ming Hsu, Yueh Tao Chiang, Chi Wen Chang, Chien-Ting Chen, Chi-Ming Chu, Yu-Jia Chang, Chen En Jian, and Jyh Cherng Yu
- Subjects
0301 basic medicine ,Oncology ,medicine.medical_specialty ,Candidate gene ,Gene regulatory network ,Immunoglobulins ,lcsh:Medicine ,Triple Negative Breast Neoplasms ,Biology ,Article ,Disease-Free Survival ,03 medical and health sciences ,0302 clinical medicine ,Breast cancer ,Internal medicine ,medicine ,Biomarkers, Tumor ,Humans ,Gene Regulatory Networks ,lcsh:Science ,Survival analysis ,Triple-negative breast cancer ,Oligonucleotide Array Sequence Analysis ,Regulation of gene expression ,Multidisciplinary ,Gene Expression Profiling ,lcsh:R ,medicine.disease ,Prognosis ,Survival Analysis ,Gene Expression Regulation, Neoplastic ,030104 developmental biology ,Gene co-expression network ,IGHD ,Female ,lcsh:Q ,Neoplasm Recurrence, Local ,030217 neurology & neurosurgery - Abstract
Gene co-expression network analysis (GCNA) can detect alterations in regulatory activities in case/control comparisons. We propose a framework to detect novel genes and networks for predicting breast cancer recurrence. Thirty-four prognosis candidate genes were selected based on a literature review. Four Gene Expression Omnibus Series (GSE) microarray datasets (n = 920) were used to create gene co-expression networks based on these candidates. We applied the framework to four comparison groups according to node (+/−) and recurrence (+/−). We identified a sub-network containing two candidate genes (LST1 and IGHM) and six novel genes (IGHA1, IGHD, IGHG1, IGHG3, IGLC2, and IGLJ3) related to B cell-specific immunoglobulin. These novel genes were correlated with recurrence under the control of node status and were found to function as tumor suppressors; higher mRNA expression indicated a lower risk of recurrence (hazard ratio, HR = 0.87, p = 0.001). We created an immune index score by performing principle component analysis and divided the genes into low and high groups. This discrete index significantly predicted relapse-free survival (RFS) (high: HR = 0.77, p = 0.019; low: control). Public tool KM Plotter and TCGA-BRCA gene expression data were used to validate. We confirmed these genes are correlated with RFS and distal metastasis-free survival (DMFS) in triple-negative breast cancer (TNBC) and general breast cancer.
- Published
- 2019
- Full Text
- View/download PDF
26. A Delphi Study on the Healthcare Needs of Patients with Type 1 Diabetes during the Transition from Adolescence to Adulthood: Consensus among Patients, Primary Caregivers, and Healthcare Providers
- Author
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Yueh Tao Chiang, Pei-Kwei Tsay, Chi-Wen Chang, Chien Lung Hsu, Hsing-Yi Yu, Philip Moons, Fu-Sung Lo, and Chi Wen Chen
- Subjects
Adult ,medicine.medical_specialty ,healthcare need ,Consensus ,Exacerbation ,Adolescent ,Delphi Technique ,type 1 diabetes ,Health, Toxicology and Mutagenesis ,Health Personnel ,Delphi method ,Psychological intervention ,030209 endocrinology & metabolism ,Environmental Sciences & Ecology ,Health outcomes ,Article ,03 medical and health sciences ,0302 clinical medicine ,Intervention (counseling) ,Health care ,YOUNG-ADULTS ,medicine ,Humans ,030212 general & internal medicine ,Public, Environmental & Occupational Health ,Type 1 diabetes ,Science & Technology ,business.industry ,Public Health, Environmental and Occupational Health ,SERVICES ,medicine.disease ,EXPERIENCES ,Delphi methods ,Diabetes Mellitus, Type 1 ,Caregivers ,Family medicine ,Medicine ,business ,Healthcare providers ,Life Sciences & Biomedicine ,Delivery of Health Care ,Environmental Sciences - Abstract
Patients with type 1 diabetes mellitus at the age of 16–25 face the challenges of the deterioration of disease control and accelerated exacerbation. Providing interventions that meet patient’s healthcare needs can reduce the impact and improve health outcome. The purpose of this study was to identify the healthcare needs of patients with type 1 diabetes during the adolescence to adulthood transition period from the perspectives of patients, parents and healthcare providers. A two-round Delphi study was conducted among 48 participants, and included 17 patients, 16 primary caregivers, and 15 healthcare providers. The central tendency and dispersion were computed to establish a consensus. Seventy-one healthcare needs were identified across five dimensions—technology, external support, internal support, management, and healthcare—and 56 were considered as important healthcare needs and with a moderate to high level of agreement. Meanwhile, patients, primary caregivers, and healthcare providers were found to display significantly different opinions (p <, 0.05) for 23 healthcare needs. This study concluded the consensus of the healthcare needs of patients with type 1 diabetes mellitus during the adolescence to adulthood transition period from a systematic investigation. The findings can serve as reference for developing transitional intervention strategies.
- Published
- 2021
27. Volatilized myrcene inhibits growth and activates defense responses in rice roots
- Author
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Hsiung, Yu-Chywan, Chen, Yun-An, Chen, Shao-Yen, Chi, Wen-Chang, Lee, Ruey-Hua, Chiang, Tzen-Yuh, and Huang, Hao-Jen
- Published
- 2013
- Full Text
- View/download PDF
28. Genetic co-expression networks contribute to creating predictive model and exploring novel biomarkers for the prognosis of breast cancer
- Author
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Chien-An Sun, Yuan-Kuei Li, Hung-Che Lin, Yi-Syuan Wu, Jyh-Cherng Yu, Chien-Ting Chen, Ming-Hao Kuo, Huan-Ming Hsu, Chen Lin, Meng-Chiung Lin, Chi-Ming Chu, Yu-Tien Chang, Chia-Shiang Cheng, Hao-Yi Wu, Chen-En Jian, Chi-Wen Chang, Yu-Jia Chang, Kang-Hua Chen, Ya-Ting Yang, Je-Ming Hu, and Ya-Ting Chang
- Subjects
0301 basic medicine ,Oncology ,Candidate gene ,medicine.medical_specialty ,Microarray ,Science ,Breast Neoplasms ,Biology ,Models, Biological ,Disease-Free Survival ,Article ,Novel gene ,03 medical and health sciences ,0302 clinical medicine ,Text mining ,Breast cancer ,Internal medicine ,medicine ,Biomarkers, Tumor ,Humans ,Cancer genetics ,Oligonucleotide Array Sequence Analysis ,Multidisciplinary ,business.industry ,Gene Expression Profiling ,Hazard ratio ,medicine.disease ,Publisher Correction ,Regression ,Gene Expression Regulation, Neoplastic ,Survival Rate ,030104 developmental biology ,030220 oncology & carcinogenesis ,Medicine ,Female ,business ,Databases, Nucleic Acid ,Predictive modelling - Abstract
Genetic co-expression network (GCN) analysis augments the understanding of breast cancer (BC). We aimed to propose GCN-based modeling for BC relapse-free survival (RFS) prediction and to discover novel biomarkers. We used GCN and Cox proportional hazard regression to create various prediction models using mRNA microarray of 920 tumors and conduct external validation using independent data of 1056 tumors. GCNs of 34 identified candidate genes were plotted in various sizes. Compared to the reference model, the genetic predictors selected from bigger GCNs composed better prediction models. The prediction accuracy and AUC of 3 ~ 15-year RFS are 71.0–81.4% and 74.6–78% respectively (rfm, ACC 63.2–65.5%, AUC 61.9–74.9%). The hazard ratios of risk scores of developing relapse ranged from 1.89 ~ 3.32 (p –8) over all models under the control of the node status. External validation showed the consistent finding. We found top 12 co-expressed genes are relative new or novel biomarkers that have not been explored in BC prognosis or other cancers until this decade. GCN-based modeling creates better prediction models and facilitates novel genes exploration on BC prognosis.
- Published
- 2021
29. A Technology Acceptance Model for Deploying Masks to Combat the COVID-19 Pandemic in Taiwan (My Health Bank): Web-Based Cross-sectional Survey Study (Preprint)
- Author
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Wen-Hsun Tsai, Yi-Syuan Wu, Chia-Shiang Cheng, Ming-Hao Kuo, Yu-Tien Chang, Fu-Kang Hu, Chien-An Sun, Chi-Wen Chang, Ta-Chien Chan, Chao-Wen Chen, Chia-Cheng Lee, and Chi-Ming Chu
- Abstract
BACKGROUND The successful completion of medical practices often relies on information collection and analysis. Government agencies and medical institutions have encouraged people to use medical information technology (MIT) to manage their conditions and promote personal health. In 2014, Taiwan established the first electronic personal health record (PHR) platform, My Health Bank (MHB), which allows people to access and manage their PHRs at any time. In the face of the COVID-19 pandemic in 2020, Taiwan has used MIT to effectively prevent the spread of COVID-19 and undertaken various prevention measures before the onset of the outbreak. Using MHB to purchase masks in an efficient and orderly way and thoroughly implementing personal protection efforts is highly important to contain disease spread. OBJECTIVE This study aims to understand people’s intention to use the electronic PHR platform MHB and to investigate the factors affecting their intention to use this platform. METHODS From March 31 to April 9, 2014, in a promotion via email and Facebook, participants were asked to fill out a structured questionnaire after watching an introductory video about MHB on YouTube. The questionnaire included seven dimensions: perceived usefulness, perceived ease of use, health literacy, privacy and security, computer self-efficacy, attitude toward use, and behavioral intention to use. Each question was measured on a 5-point Likert scale ranging from “strongly disagree” (1 point) to “strongly agree” (5 points). Descriptive statistics and structural equation analysis were performed using SPSS 21 and AMOS 21 software. RESULTS A total of 350 valid questionnaire responses were collected (female: 219/350, 62.6%; age: 21-30 years: 238/350, 68.0%; university-level education: 228/350, 65.1%; occupation as student: 195/350, 56.6%; average monthly income X2310=2.63), goodness-of-fit index (0.85), adjusted goodness-of-fit index (0.81), comparative fit index (0.91), and root mean square error of approximation (0.07), were calculated. The results indicated a good fit. Further analysis indicated that the most important factor affecting respondents’ behavioral intention to use MHB was their attitude toward use (0.78), followed by perceived ease of use (0.65), perceived usefulness (0.41), health literacy (0.10), and privacy and security (0.07). CONCLUSIONS From the perspective of the populace, this study explored the factors affecting the use of MHB and constructed an interpretation model with a strong goodness of fit. The results of our analysis are consistent with the technology acceptance model. Through the diverse value-added services of MHB, Taiwan's experience in pandemic prevention with smart technology can facilitate future responses to unknown, emerging infectious diseases.
- Published
- 2021
- Full Text
- View/download PDF
30. Identification of transcriptome profiles and signaling pathways for the allelochemical juglone in rice roots
- Author
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Chi, Wen-Chang, Fu, Shih-Feng, Huang, Tsai-Lien, Chen, Yun-An, Chen, Chi-Cien, and Huang, Hao-Jen
- Published
- 2011
- Full Text
- View/download PDF
31. Publisher Correction: Genetic co-expression networks contribute to creating predictive model and exploring novel biomarkers for the prognosis of breast cancer
- Author
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Hao-Yi Wu, Yi-Syuan Wu, Ya-Ting Chang, Huan-Ming Hsu, Ming-Hao Kuo, Chi-Ming Chu, Chen Lin, Chi-Wen Chang, Meng-Chiung Lin, Chia-Shiang Cheng, Je-Ming Hu, Chien-Ting Chen, Chen-En Jian, Jyh-Cherng Yu, Yu-Tien Chang, Chien-An Sun, Yuan-Kuei Li, Hung-Che Lin, Ya-Ting Yang, Yu-Jia Chang, and Kang-Hua Chen
- Subjects
Multidisciplinary ,business.industry ,Science ,MEDLINE ,Computational biology ,medicine.disease ,Text mining ,Breast cancer ,Expression (architecture) ,medicine ,Medicine ,business - Abstract
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
- Published
- 2021
32. The Effectiveness of the Buzzy Device for Pain Relief in Children During Intravenous Injection: Quasirandomized Study (Preprint)
- Author
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Yen-Hua Cho, Yi-Chien Chiang, Tsung-Lan Chu, Chi-Wen Chang, Chun-Chu Chang, and Hsiu-Min Tsai
- Abstract
BACKGROUND Intravenous injection is the most common medical treatment and the main cause of pain in hospitalized children. If there is no appropriate health care for pain relief, the proportion of moderate and severe pain often exceeds 70%. With nonpharmaceutical-based pain management, Buzzy is recognized as an effective device for rapidly relieving injection pain in hospitalized children. However, Buzzy is not widely used in Asia and very few experimental studies in Asia have addressed the effectiveness of the Buzzy device at treating needle pain in hospitalized children. OBJECTIVE The main purpose of this study was to investigate the effectiveness of the Buzzy device for diminishing pain levels among hospitalized children in Taiwan. METHODS We applied a quasiexperimental design with random assignment. According to the time of admission, child participants were randomly assigned to treatment and nontreatment groups. The Buzzy device was applied as an intervention in this study. The samples size was 30 per group. The study participants were recruited from the pediatric ward of a medical center in northern Taiwan. The research data were collected longitudinally at three time points: before, during, and after intravenous injection. Three instruments were used for assessment: a demographic information sheet, the Wong-Baker Face Scale (WBFS), and the Faces Legs Activity Cry Consolability (FLACC) scale. The data were analyzed by descriptive analysis, the Mann-Whitney U test, the Wilcoxon signed-rank test, and the χ2 test. RESULTS A total of 60 hospitalized children aged 3 to 7 years participated in this study, including 30 participants in the treatment group and 30 participants in the nontreatment group. The average age of children in the treatment and nontreatment groups was 5.04 years and 4.38 years, respectively. Buzzy significantly mitigated pain in children during intravenous injection with a significant difference between the two groups in pain-related response (FLACC) and actual pain (WBFS) (Z=–3.551, PZ=–3.880, PZ=–2.387, P=.02). When Buzzy was employed, the children experienced less pain than they did during previous intravenous injections (Z=–3.643, P CONCLUSIONS The intervention of using the Buzzy device was effective in reducing pain levels of intravenous injection among hospitalized children. The specific focus on children in Asia makes a valuable contribution to the literature. For clinical application, the reliable pain relief measure of Buzzy can be used in other Asian children to help health care providers improve noninvasive care among children. For future applications, researchers could integrate Buzzy into therapy-related games and a technology-based app to increase the efficiency of use and provide more data collection functions.
- Published
- 2019
- Full Text
- View/download PDF
33. Usability of Wearable Devices With a Novel Cardiac Force Index for Estimating the Dynamic Cardiac Function: Observational Study (Preprint)
- Author
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Po-Jen Hsiao, Chih-Chien Chiu, Ke-Hsin Lin, Fu-Kang Hu, Pei-Jan Tsai, Chun-Ting Wu, Yuan-Kai Pang, Yu Lin, Ming-Hao Kuo, Kang-Hua Chen, Yi-Syuan Wu, Hao-Yi Wu, Ya-Ting Chang, Yu-Tien Chang, Chia-Shiang Cheng, Chih-Pin Chuu, Fu-Huang Lin, Chi-Wen Chang, Yuan-Kuei Li, Jenq-Shyong Chan, and Chi-Ming Chu
- Abstract
BACKGROUND Long-distance running can be a form of stress to the heart. Technological improvements combined with the public’s gradual turn toward mobile health (mHealth), self-health, and exercise effectiveness have resulted in the widespread use of wearable exercise products. The monitoring of dynamic cardiac function changes during running and running performance should be further studied. OBJECTIVE We investigated the relationship between dynamic cardiac function changes and finish time for 3000-meter runs. Using a wearable device based on a novel cardiac force index (CFI), we explored potential correlations among 3000-meter runners with stronger and weaker cardiac functions during running. METHODS This study used the American product BioHarness 3.0 (Zephyr Technology Corporation), which can measure basic physiological parameters including heart rate, respiratory rate, temperature, maximum oxygen consumption, and activity. We investigated the correlations among new physiological parameters, including CFI = weight * activity / heart rate, cardiac force ratio (CFR) = CFI of running / CFI of walking, and finish times for 3000-meter runs. RESULTS The results showed that waist circumference, smoking, and CFI were the significant factors for qualifying in the 3000-meter run. The prediction model was as follows: ln (3000 meters running performance pass probability / fail results probability) = –2.702 – 0.096 × [waist circumference] – 1.827 × [smoke] + 0.020 × [ACi7]. If smoking and the ACi7 were controlled, contestants with a larger waist circumference tended to fail the qualification based on the formula above. If waist circumference and ACi7 were controlled, smokers tended to fail more often than nonsmokers. Finally, we investigated a new calculation method for monitoring cardiac status during exercise that uses the CFI of walking for the runner as a reference to obtain the ratio between the cardiac force of exercise and that of walking (CFR) to provide a standard for determining if the heart is capable of exercise. A relationship is documented between the CFR and the performance of 3000-meter runs in a healthy 22-year-old person. During the running period, data are obtained while participant slowly runs 3000 meters, and the relationship between the CFR and time is plotted. The runner’s CFR varies with changes in activity. Since the runner’s acceleration increases, the CFR quickly increases to an explosive peak, indicating the runner’s explosive power. At this period, the CFI revealed a 3-fold increase (CFR=3) in a strong heart. After a time lapse, the CFR is approximately 2.5 during an endurance period until finishing the 3000-meter run. Similar correlation is found in a runner with a weak heart, with the CFR at the beginning period being 4 and approximately 2.5 thereafter. CONCLUSIONS In conclusion, the study results suggested that measuring the real-time CFR changes could be used in a prediction model for 3000-meter running performance.
- Published
- 2019
- Full Text
- View/download PDF
34. A Technology Acceptance Model for Deploying Masks to Combat the COVID-19 Pandemic in Taiwan (My Health Bank): Web-Based Cross-sectional Survey Study
- Author
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Chao-Wen Chen, Chien-An Sun, Yu-Tien Chang, Ming-Hao Kuo, Wen-Hsun Tsai, Chi-Ming Chu, Ta-Chien Chan, Chia-Shiang Cheng, Chia-Cheng Lee, Yi-Syuan Wu, Fu-Kang Hu, and Chi-Wen Chang
- Subjects
Male ,Technology ,020205 medical informatics ,Applied psychology ,literacy ,02 engineering and technology ,Literacy ,0302 clinical medicine ,Promotion (rank) ,Surveys and Questionnaires ,0202 electrical engineering, electronic engineering, information engineering ,030212 general & internal medicine ,electronic medical record ,media_common ,structural equation model ,Masks ,personal health record ,electronic health record ,protection ,usage ,Test (assessment) ,intention ,Female ,my health bank ,Public aspects of medicine ,RA1-1270 ,Psychology ,Adult ,technology acceptance model ,media_common.quotation_subject ,Computer applications to medicine. Medical informatics ,Taiwan ,R858-859.7 ,Health Informatics ,Health literacy ,security ,privacy ,Structural equation modeling ,Likert scale ,Young Adult ,03 medical and health sciences ,Disease Transmission, Infectious ,Humans ,survey ,Pandemics ,Original Paper ,Internet ,model ,Descriptive statistics ,SARS-CoV-2 ,COVID-19 ,Cross-Sectional Studies ,Technology acceptance model - Abstract
Background The successful completion of medical practices often relies on information collection and analysis. Government agencies and medical institutions have encouraged people to use medical information technology (MIT) to manage their conditions and promote personal health. In 2014, Taiwan established the first electronic personal health record (PHR) platform, My Health Bank (MHB), which allows people to access and manage their PHRs at any time. In the face of the COVID-19 pandemic in 2020, Taiwan has used MIT to effectively prevent the spread of COVID-19 and undertaken various prevention measures before the onset of the outbreak. Using MHB to purchase masks in an efficient and orderly way and thoroughly implementing personal protection efforts is highly important to contain disease spread. Objective This study aims to understand people’s intention to use the electronic PHR platform MHB and to investigate the factors affecting their intention to use this platform. Methods From March 31 to April 9, 2014, in a promotion via email and Facebook, participants were asked to fill out a structured questionnaire after watching an introductory video about MHB on YouTube. The questionnaire included seven dimensions: perceived usefulness, perceived ease of use, health literacy, privacy and security, computer self-efficacy, attitude toward use, and behavioral intention to use. Each question was measured on a 5-point Likert scale ranging from “strongly disagree” (1 point) to “strongly agree” (5 points). Descriptive statistics and structural equation analysis were performed using SPSS 21 and AMOS 21 software. Results A total of 350 valid questionnaire responses were collected (female: 219/350, 62.6%; age: 21-30 years: 238/350, 68.0%; university-level education: 228/350, 65.1%; occupation as student: 195/350, 56.6%; average monthly income Conclusions From the perspective of the populace, this study explored the factors affecting the use of MHB and constructed an interpretation model with a strong goodness of fit. The results of our analysis are consistent with the technology acceptance model. Through the diverse value-added services of MHB, Taiwan's experience in pandemic prevention with smart technology can facilitate future responses to unknown, emerging infectious diseases.
- Published
- 2021
- Full Text
- View/download PDF
35. Gene expression profiling of breast cancer survivability by pooled cDNA microarray analysis using logistic regression, artificial neural networks and decision trees.
- Author
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Hsiu-Ling Chou, Chung-Tay Yao, Sui-Lun Su, Chia-Yi Lee, Kuang-Yu Hu, Harn-Jing Terng, Yun-Wen Shih, Yu-Tien Chang, Yu-Fen Lu, Chi-Wen Chang, Mark L. Wahlqvist, Thomas Wetter, and Chi-Ming Chu
- Published
- 2013
- Full Text
- View/download PDF
36. 59-4: Reduction of Possible Flicker and Color Breakup using Deflicker-FSC Method for Field-Sequential-Color Displays
- Author
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Kai-Tung Teng, Fang-Cheng Lin, Han-Ping D. Shieh, Ching-Huan Lin, Yi-Pai Huang, and Chi-Wen Chang
- Subjects
010302 applied physics ,Physics ,business.industry ,Flicker ,Backlight ,Breakup ,01 natural sciences ,Luminance ,Active shutter 3D system ,Reduction (complexity) ,Optics ,Modulation ,0103 physical sciences ,Computer vision ,Artificial intelligence ,business ,Energy (signal processing) - Abstract
This paper proposes a driving method for 240Hz field-sequential-color displays. The proposed method redistributes the image energy in the displayed color fields with the modulation of backlight and liquid crystal signals. Most of the image luminance was concentrated in two multicolor fields, while the luminance of the other mono-color fields was much reduced. The proposed driving method can not only avoid the potential flicker issue but suppress the color breakup phenomenon.
- Published
- 2016
- Full Text
- View/download PDF
37. P-46: Essential Image Enhancement Algorithms for Mobile Displays
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Fang-Cheng Lin, Ivory Kuo, Yi-Pai Huang, Ke Jun Liu, Chi Wen Chang, Jen Hao Ethen Hsueh, Han-Ping D. Shieh, and Zong Qin
- Subjects
Engineering ,Firmware ,business.industry ,Computation ,Reservation ,Color balance ,Function (mathematics) ,computer.software_genre ,Chip ,Power (physics) ,Software ,business ,computer ,Algorithm - Abstract
Image enhancement by software or firmware has been a necessary function for smart phones. In this paper, a systematic algorithm was introduced to implement white balance correction, detail enhancement, and saturation enhancement with skin color reservation in turn. Additionally, the proposed algorithm was concise enough to adapt to limited computation power of the chip.
- Published
- 2016
- Full Text
- View/download PDF
38. 15-2: Effective Color Breakup Suppression by a Low-Cost Global Dimming Backlight for Field-Sequential-Color Displays
- Author
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Yi-Pai Huang, Chi-Wen Chang, Kai-Tung Teng, Fang-Cheng Lin, Han-Ping D. Shieh, and Ching-Huan Lin
- Subjects
010302 applied physics ,Computational complexity theory ,business.industry ,Backlight ,Global dimming ,Breakup ,01 natural sciences ,Image (mathematics) ,010309 optics ,Active shutter 3D system ,Geography ,Computer graphics (images) ,0103 physical sciences ,Computer vision ,Artificial intelligence ,business - Abstract
This paper considers edge-directed information of an input image to effectively suppress color breakup for a field-sequential-color (FSC) display. The edge-directed concept can be applied on any current color breakup solution or even applying on a global dimming backlight system. From the simulated and emulated results, the edge-directed FSC method significantly suppresses color breakup as using Stencil-FSC with 12×24 backlight segments. Hence, the proposed edge-directed FSC method can much reduce the computational complexity and make an FSC display more promising as next generation eco-displays.
- Published
- 2016
- Full Text
- View/download PDF
39. Primary conus medullaris germinoma: A 22-year follow-up
- Author
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Hsing Hong Chen, Chi Wen Chang, and Jung-Shun Lee
- Subjects
medicine.medical_specialty ,Germinoma ,business.industry ,medicine.medical_treatment ,Intramedullary spinal cord ,lcsh:Surgery ,Hypoesthesia ,primary intramedullary spinal cord germinoma ,lcsh:RD1-811 ,medicine.disease ,Surgery ,Tumor recurrence ,Conus medullaris ,Radiation therapy ,Conus medullaris germinoma ,medicine.anatomical_structure ,Treatment modality ,medicine ,medicine.symptom ,business ,radiotherapy - Abstract
Primary intramedullary spinal cord germinoma (PISCG) is very rare, and its preoperative diagnosis is therefore difficult. In addition, its treatment protocols and long-term outcomes are not yet established. Here, we report the case of a patient with a primary conus medullaris germinoma who initially presented with ejaculatory disturbance and coccygeal hypoesthesia. After the total excision of the germinoma and radiotherapy, no tumor recurrence was noted for 22 years. We have also reviewed the distribution of PISCG in spinal segments and its treatment modalities.
- Published
- 2017
40. Usability of Wearable Devices With a Novel Cardiac Force Index for Estimating the Dynamic Cardiac Function: Observational Study
- Author
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Ke-Hsin Lin, Jenq-Shyong Chan, Fu-Huang Lin, Chih-Chien Chiu, Po-Jen Hsiao, Chia-Shiang Cheng, Yi-Syuan Wu, Pei-Jan Tsai, Yu Lin, Kang-Hua Chen, Chi-Wen Chang, Ya-Ting Chang, Fu-Kang Hu, Chi-Ming Chu, Yuan-Kai Pang, Chih-Pin Chuu, Ming-Hao Kuo, Hao-Yi Wu, Chun-Ting Wu, Yuan-Kuei Li, and Yu-Tien Chang
- Subjects
Male ,Cardiac function curve ,medicine.medical_specialty ,Waist ,Respiratory rate ,cardiac force ,physical activity ,Health Informatics ,Information technology ,030204 cardiovascular system & hematology ,Wearable Electronic Devices ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Heart rate ,running ,heart rate ,medicine ,Humans ,Wearable technology ,Mathematics ,Original Paper ,business.industry ,VO2 max ,Heart ,acceleration ,030229 sport sciences ,T58.5-58.64 ,Circumference ,Cardiology ,Observational study ,Public aspects of medicine ,RA1-1270 ,business - Abstract
Background Long-distance running can be a form of stress to the heart. Technological improvements combined with the public’s gradual turn toward mobile health (mHealth), self-health, and exercise effectiveness have resulted in the widespread use of wearable exercise products. The monitoring of dynamic cardiac function changes during running and running performance should be further studied. Objective We investigated the relationship between dynamic cardiac function changes and finish time for 3000-meter runs. Using a wearable device based on a novel cardiac force index (CFI), we explored potential correlations among 3000-meter runners with stronger and weaker cardiac functions during running. Methods This study used the American product BioHarness 3.0 (Zephyr Technology Corporation), which can measure basic physiological parameters including heart rate, respiratory rate, temperature, maximum oxygen consumption, and activity. We investigated the correlations among new physiological parameters, including CFI = weight * activity / heart rate, cardiac force ratio (CFR) = CFI of running / CFI of walking, and finish times for 3000-meter runs. Results The results showed that waist circumference, smoking, and CFI were the significant factors for qualifying in the 3000-meter run. The prediction model was as follows: ln (3000 meters running performance pass probability / fail results probability) = –2.702 – 0.096 × [waist circumference] – 1.827 × [smoke] + 0.020 × [ACi7]. If smoking and the ACi7 were controlled, contestants with a larger waist circumference tended to fail the qualification based on the formula above. If waist circumference and ACi7 were controlled, smokers tended to fail more often than nonsmokers. Finally, we investigated a new calculation method for monitoring cardiac status during exercise that uses the CFI of walking for the runner as a reference to obtain the ratio between the cardiac force of exercise and that of walking (CFR) to provide a standard for determining if the heart is capable of exercise. A relationship is documented between the CFR and the performance of 3000-meter runs in a healthy 22-year-old person. During the running period, data are obtained while participant slowly runs 3000 meters, and the relationship between the CFR and time is plotted. The runner’s CFR varies with changes in activity. Since the runner’s acceleration increases, the CFR quickly increases to an explosive peak, indicating the runner’s explosive power. At this period, the CFI revealed a 3-fold increase (CFR=3) in a strong heart. After a time lapse, the CFR is approximately 2.5 during an endurance period until finishing the 3000-meter run. Similar correlation is found in a runner with a weak heart, with the CFR at the beginning period being 4 and approximately 2.5 thereafter. Conclusions In conclusion, the study results suggested that measuring the real-time CFR changes could be used in a prediction model for 3000-meter running performance.
- Published
- 2020
- Full Text
- View/download PDF
41. Albuminuria and neck circumference are determinate factors of successful accurate estimation of glomerular filtration rate in high cardiovascular risk patients
- Author
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Jung-Jung Chang, Chang-Min Chung, Sui-Lung Su, Fu-Chi Chen, Kuo-Chun Hung, Chi-Ming Chu, Po-Jen Hsiao, Jen-Te Hsu, Chi-Wen Chang, Hung-Che Lin, Shih-Tai Chang, Fu-Kang Hu, Yi-Syuan Wu, Wei-Shiang Lin, and Yun-Wen Shih
- Subjects
Male ,Cross-sectional study ,Physiology ,030232 urology & nephrology ,lcsh:Medicine ,030204 cardiovascular system & hematology ,Urine ,urologic and male genital diseases ,Biochemistry ,chemistry.chemical_compound ,0302 clinical medicine ,Risk Factors ,Chronic Kidney Disease ,Medicine and Health Sciences ,lcsh:Science ,Multidisciplinary ,biology ,Anthropometry ,Middle Aged ,female genital diseases and pregnancy complications ,Body Fluids ,Cardiovascular Diseases ,Nephrology ,Creatinine ,Female ,medicine.symptom ,Anatomy ,Glomerular Filtration Rate ,Research Article ,medicine.medical_specialty ,Urology ,Taiwan ,Renal function ,03 medical and health sciences ,Albumins ,medicine ,Albuminuria ,Humans ,Aged ,Renal Physiology ,business.industry ,lcsh:R ,Biology and Life Sciences ,Proteins ,Kidneys ,Renal System ,Stepwise regression ,medicine.disease ,Cross-Sectional Studies ,chemistry ,Cystatin C ,biology.protein ,lcsh:Q ,business ,Neck ,Biomarkers ,Kidney disease ,Microalbuminuria - Abstract
Background Estimated glomerular filtration rate (eGFR) is used for diagnosis of chronic kidney disease (CKD). The eGFR models based on serum creatinine or cystatin C are used more in clinical practice. Albuminuria and neck circumference are associated with CKD and may have correlations with eGFR. Aim We explored the correlations and modelling formulates among various indicators such as serum creatinine, cystatin C, albuminuria, and neck circumference for eGFR. Design Cross-sectional study. Methods We reviewed the records of patients with high cardiovascular risk from 2010 to 2011 in Taiwan. 24-hour urine creatinine clearance was used as the standard. We utilized a decision tree to select for variables and adopted a stepwise regression method to generate five models. Model 1 was based on only serum creatinine and was adjusted for age and gender. Model 2 added serum cystatin C, models 3 and 4 added albuminuria and neck circumference, respectively. Model 5 simultaneously added both albuminuria and neck circumference. Results Total 177 patients were recruited in this study. In model 1, the bias was 2.01 and its precision was 14.04. In model 2, the bias was reduced to 1.86 with a precision of 13.48. The bias of model 3 was 1.49 with a precision of 12.89, and the bias for model 4 was 1.74 with a precision of 12.97. In model 5, the bias could be lower to 1.40 with a precision of 12.53. Conclusions In this study, the predicting ability of eGFR was improved after the addition of serum cystatin C compared to serum creatinine alone. The bias was more significantly reduced by the calculation of albuminuria. Furthermore, the model generated by combined albuminuria and neck circumference could provide the best eGFR predictions among these five eGFR models. Neck circumference can be investigated potentially in the further studies.
- Published
- 2018
42. High-Image Reproduction by the Low-Field-Rate Stencil-LPD Method for Field-Sequential-Color LCDs
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Chi-Wen Chang, Han-Ping D. Shieh, Yi-Pai Huang, and Fang-Cheng Lin
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business.industry ,Image quality ,Computer science ,Image segmentation ,Backlight ,Condensed Matter Physics ,Breakup ,Stencil ,Electronic, Optical and Magnetic Materials ,Active shutter 3D system ,Optics ,Distortion ,Computer vision ,Artificial intelligence ,Electrical and Electronic Engineering ,business ,Image resolution - Abstract
Color breakup is a lethal issue to conventional field-sequential-color LCDs. Several methods have been proposed to solve this problem. However, these solutions are either more than 180 Hz—the currently used LC mode is not sufficiently fast for this field rate—or they degrade the image quality while using a field rate of 120 Hz. To overcome these limitations, a 120 Hz Stencil Local Primary Desaturation, Stencil-LPD, is presented in this work. The 120 Hz Stencil-LPD method provides reduced but sufficient saturated backlight color to precisely present an image with less color distortion or color breakup. After optimizing a number of backlight segments, the experimental results demonstrate that the image fidelity is significantly improved and color breakup is greatly suppressed compared to the existing methods.
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- 2015
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43. Applications of biomaterials in corneal wound healing
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I-Lun Tsai, Chi-Wen Chang, Chih Chien Hsu, Yung-Hsin Cheng, and Kuo-Hsuan Hung
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medicine.medical_specialty ,Pemphigoid, Benign Mucous Membrane ,Biocompatible Materials ,Bioengineering ,Fibrin ,Cornea ,chemistry.chemical_compound ,Drug Delivery Systems ,Silicone ,medicine ,Humans ,bioengineered prosthetic devices ,Amnion ,Medicine(all) ,lcsh:R5-920 ,Wound Healing ,Blindness ,biology ,business.industry ,Regeneration (biology) ,Hydrogels ,General Medicine ,Contact Lenses, Hydrophilic ,medicine.disease ,eye diseases ,Surgery ,contact lenses ,medicine.anatomical_structure ,chemistry ,Drug delivery ,Self-healing hydrogels ,Corneal wound ,biology.protein ,corneal regeneration ,sense organs ,lcsh:Medicine (General) ,business ,biomaterials ,Biomedical engineering - Abstract
Disease affecting the cornea is a common cause of blindness worldwide. To date, the amniotic membrane (AM) is the most widely used clinical method for cornea regeneration. However, donor-dependent differences in the AM may result in variable clinical outcomes. To overcome this issue, biomaterials are currently under investigation for corneal regeneration in vitro and in vivo. In this article, we highlight the recent advances in hydrogels, bioengineered prosthetic devices, contact lenses, and drug delivery systems for corneal regeneration. In clinical studies, the therapeutic effects of biomaterials, including fibrin and collagen-based hydrogels and silicone contact lenses, have been demonstrated in damaged cornea. The combination of cells and biomaterials may provide potential treatment in corneal wound healing in the future.
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- 2015
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44. Translation and Psychometric Properties of a Chinese Version of the Dutch Eating Behavior Questionnaire for Children in Taiwanese Preadolescents
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Hsiao-Ling Chuang, Chi-Wen Chang, Jaclene A. Zauszniewski, and Ya-Fen Wang
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Chinese version ,MEDLINE ,Eating behavior ,Psychology ,General Nursing ,Developmental psychology - Published
- 2017
45. Translation and Psychometric Analysis of the Chinese Version of the Dutch Eating Behavior Questionnaire for Children (DEBQ-C) in Taiwanese Preadolescents
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Jaclene A. Zauszniewski, Chi-Wen Chang, Ya-Fen Wang, and Hsiao-Ling Chuang
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0301 basic medicine ,Male ,Pediatric Obesity ,Psychometrics ,Adolescent ,Taiwan ,Pediatrics ,03 medical and health sciences ,Cronbach's alpha ,Surveys and Questionnaires ,Humans ,Translations ,Overeating ,Child ,030109 nutrition & dietetics ,Construct validity ,Reproducibility of Results ,Feeding Behavior ,Translating ,Explained variation ,Confirmatory factor analysis ,Exploratory factor analysis ,Female ,Construct (philosophy) ,Psychology ,Attitude to Health ,Clinical psychology - Abstract
Purpose This study aimed to translate and evaluate the psychometric properties of a Chinese version of the (DEBQ-C) among Taiwanese preadolescents. Design and Methods The DEBQ-C was translated into Mandarin Chinese (CDEBQ-C) using established translation and back-translation methods and reviewed by an expert panel for cultural equivalence. A convenience sample of 349 preadolescents was randomly split to conduct exploratory factor analysis (EFA) on the first half and confirmatory factor analysis (CFA) on the second. Internal consistency estimates for subscales were evaluated using Cronbach's alpha. Construct validation with academic stress, a theoretically related construct, was also examined. Results The theoretical dimensions of the original DEBQ-C were supported with an EFA that revealed the presence of three factors with 41.23% variance explained, and model fit was confirmed by CFA. Construct validation was supported by positive correlations with academic stress. Each subscale of the CDEBQ-C demonstrated satisfactory internal consistency (Cronbach's alpha = 0.72–0.86). Overweight/obese preadolescents scored significantly higher on restrained eating compared to other weight groups. Conclusions The findings suggest that the CDEBQ-C is a psychometrically valid and reliable instrument for assessing overeating tendencies with Taiwanese preadolescents. Replication studies with greater diversity in age, ethnicity, and weight are needed to provide further evidence of construct validity for the CDEBQ-C. Practice Implications Clinicians and researchers can use the CDEBQ-C to assess or expand the knowledge of children's overeating. At-risk preadolescents can be identified at an early stage and effective and individualized intervention programs may be designed and facilitated.
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- 2017
46. Risk analysis of colorectal cancer incidence by gene expression analysis
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Chung-Tay Yao, Ya-Fang Liu, Chi-Wen Chang, Chen-En Jian, Wei-Chuan Shangkuan, Yu-Tien Chang, Hsiu-Ling Chou, Kang-Hua Chen, Huan-Ming Hsu, Chi-Ming Chu, Sui-Lung Su, Hung-Che Lin, and Hueng-Chuen Fan
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0301 basic medicine ,Candidate gene ,Prediction analysis for microarrays ,Microarray ,Bioinformatics ,Colorectal cancer ,lcsh:Medicine ,Computational biology ,Biology ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Mathematical Biology ,Molecular Biology ,Cancer ,Microarray analysis techniques ,General Neuroscience ,Statistics ,lcsh:R ,Microarray analysis ,General Medicine ,medicine.disease ,Gene expression profiling ,030104 developmental biology ,Oncology ,030220 oncology & carcinogenesis ,Gene ontology ,Gene expression ,DNA microarray ,General Agricultural and Biological Sciences ,TGFBI - Abstract
Background Colorectal cancer (CRC) is one of the leading cancers worldwide. Several studies have performed microarray data analyses for cancer classification and prognostic analyses. Microarray assays also enable the identification of gene signatures for molecular characterization and treatment prediction. Objective Microarray gene expression data from the online Gene Expression Omnibus (GEO) database were used to to distinguish colorectal cancer from normal colon tissue samples. Methods We collected microarray data from the GEO database to establish colorectal cancer microarray gene expression datasets for a combined analysis. Using the Prediction Analysis for Microarrays (PAM) method and the GSEA MSigDB resource, we analyzed the 14,698 genes that were identified through an examination of their expression values between normal and tumor tissues. Results Ten genes (ABCG2, AQP8, SPIB, CA7, CLDN8, SCNN1B, SLC30A10, CD177, PADI2, and TGFBI) were found to be good indicators of the candidate genes that correlate with CRC. From these selected genes, an average of six significant genes were obtained using the PAM method, with an accuracy rate of 95%. The results demonstrate the potential of utilizing a model with the PAM method for data mining. After a detailed review of the published reports, the results confirmed that the screened candidate genes are good indicators for cancer risk analysis using the PAM method. Conclusions Six genes were selected with 95% accuracy to effectively classify normal and colorectal cancer tissues. We hope that these results will provide the basis for new research projects in clinical practice that aim to rapidly assess colorectal cancer risk using microarray gene expression analysis.
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- 2017
47. An object-based error concealment technique for H.264 coded video
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Chih-Chieh Chan, Chi-Wen Chang, and Shih-Hsuan Yang
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Computer Networks and Communications ,business.industry ,Computer science ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Data_CODINGANDINFORMATIONTHEORY ,Motion vector ,Flexible Macroblock Ordering ,Hardware and Architecture ,Visual Objects ,Motion estimation ,Media Technology ,Computer vision ,Segmentation ,Artificial intelligence ,business ,computer ,Encoder ,Software ,Interpolation ,computer.programming_language - Abstract
The H.264 video coding standard has become popular owing to its excellent compression efficiency. However, the H.264-coded video is very vulnerable to data loss. Conventional error concealment techniques interpolate the lost data in units of rectangular blocks, which limit the performance because a visual object is not equivalent to an image block. In this paper, we propose a new error concealment technique that uses visual objects as concealment units. The H.264 error-resilience tool FMO (Flexible Macroblock Ordering) is also incorporated at the encoder side for utilizing the spatial correlation. A lost region is concealed at the decoder side in three steps, namely object segmentation, object matching, and region-based patching. Objects are formed in the reference pictures based on color similarity, and adjacent objects of small area or the same motion are grouped as a unity. Motion estimation is performed on detected objects to find the associated motion vector. A lost region is concealed by the object in the reference picture with the best boundary-matching score. The proposed method provides considerably higher PSNR (peak signal-to-noise ratio) than conventional block-based approaches, especially for traditionally difficult cases and high-quality videos.
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- 2014
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48. Gene Expression Profiling of Colorectal Tumors and Normal Mucosa by Microarrays Meta-Analysis Using Prediction Analysis of Microarray, Artificial Neural Network, Classification, and Regression Trees
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Thomas Wetter, Fu-Gong Lin, Chi-Shuan Huang, Chia-Cheng Lee, Harn-Jing Terng, Chi-Ming Chu, Kang-Hua Chen, Chung-Tay Yao, Yu-Tien Chang, Hsiu-Ling Chou, Chi-Wen Chang, Yu-Ching Chou, Yao-Chi Liu, and Sui-Lun Su
- Subjects
Cart ,Candidate gene ,Article Subject ,Microarray ,Colon ,Clinical Biochemistry ,Biology ,Genetics ,Humans ,Intestinal Mucosa ,Molecular Biology ,Gene ,Oligonucleotide Array Sequence Analysis ,lcsh:R5-920 ,Gene Expression Profiling ,Biochemistry (medical) ,General Medicine ,Gene Expression Regulation, Neoplastic ,Gene expression profiling ,Gene Ontology ,Gene chip analysis ,Regression Analysis ,Neural Networks, Computer ,DNA microarray ,lcsh:Medicine (General) ,Colorectal Neoplasms ,Transcriptome ,Research Article ,Genetic screen - Abstract
Background. Microarray technology shows great potential but previous studies were limited by small number of samples in the colorectal cancer (CRC) research. The aims of this study are to investigate gene expression profile of CRCs by pooling cDNA microarrays using PAM, ANN, and decision trees (CART and C5.0).Methods. Pooled 16 datasets contained 88 normal mucosal tissues and 1186 CRCs. PAM was performed to identify significant expressed genes in CRCs and models of PAM, ANN, CART, and C5.0 were constructed for screening candidate genes via ranking gene order of significances.Results. The first screening identified 55 genes. The test accuracy of each model was over 0.97 averagely. Less than eight genes achieve excellent classification accuracy. Combining the results of four models, we found the top eight differential genes in CRCs; suppressor genes,CA7, SPIB, GUCA2B, AQP8, IL6RandCWH43;oncogenes,SPP1andTCN1. Genes of higher significances showed lower variation in rank ordering by different methods.Conclusion. We adopted a two-tier genetic screen, which not only reduced the number of candidate genes but also yielded good accuracy (nearly 100%). This method can be applied to future studies. Among the top eight genes,CA7,TCN1, andCWH43have not been reported to be related to CRC.
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- 2014
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49. Liquefaction characteristics of gap-graded gravelly soils in K0 condition
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Wen Jong Chang, Chi Wen Chang, and Jhang Kai Zeng
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Simple shear ,Void ratio ,Linear relationship ,Shear (geology) ,Soil water ,Wave velocity ,Soil Science ,Liquefaction ,Geotechnical engineering ,Geotechnical Engineering and Engineering Geology ,Soil liquefaction ,Geology ,Civil and Structural Engineering - Abstract
A series of undrained cyclic direct simple shear tests, which used a soil container with a membrane reinforced with stack rings to maintain the K0 condition and integrated bender elements for shear wave velocity measurement, were performed to study the liquefaction characteristics of gap-graded gravelly soils with no fines content. The intergrain state concept was employed to categorize gap-graded sand–gravel mixtures as sand-like, gravel-like, and in-transition soils, which show different liquefaction characteristics. The testing results reveal that a linear relationship exists between the shear wave velocity and the minor fraction content for sand–gravel mixtures at a given skeleton void ratio of the major fraction particles. For gap-graded gravelly sand, the gravel content has a small effect on the liquefaction resistance, and the cyclic resistance ratio (CRR) of gap-graded gravelly sands can be evaluated using current techniques for sands with gravel content corrections. In addition, the results indicate that the current shear wave velocity (Vs) based correlation underestimates the liquefaction resistance for Vs values less than 160 m/s, and different correlations should be proposed for sand-like and gravel-like gravelly soils. Preliminary modifications to the correlations used in current evaluations of liquefaction resistance have thus been proposed.
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- 2014
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50. The Applicability of Estimated Equations of Recycling Agents on the Viscosity Variety of Aged Asphalt Binders
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Chi Wen Chang, Tung Lin Wu, and Ping Sien Lin
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Arrhenius equation ,Viscosity ,symbols.namesake ,Materials science ,Asphalt ,General Engineering ,symbols ,Composite material - Abstract
This study was to perform the viscosity test of adding different ratios (from 10% to 40%) of three recycling agents (RAs), namely RA25, RA75 and RA250, to the reclaimed asphalt binder (RAB) containing a viscosity of 42800 poises. The purpose of the study was to determine the effects of various RAs on the viscosity of aged asphalt binders. The viscosity values were also estimated based on the recycling model of aged asphalt binder developed by authors and the equations developed by Arrhenius (1887), Grunberg and Nissan (1949) and Epps et al. (1980). The results show that there are significant variations in the viscosity of recycling asphalt binder when being added different ratios of RA. The estimated viscosity values computed by the recycling model of aged asphalt binder are closer to the tested results when compared with the equations developed by Arrhenius (1887), Grunberg and Nissan (1949) and Epps et al. (1980). Furthermore, the Recycling Index (RI) developed by the recycling model of aged asphalt binder can clearly and precisely reveal the recycling performance of different kinds of RAs. The Gmix from the equation developed by Grunberg and Nissan (1949) has an apparent effect on estimating the viscosity when adding RA to the RAB.
- Published
- 2013
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