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135 results on '"Chan, Yawen"'

3. System Architecture of a Body Area Network and Its Web Service Based Data Publishing

Author

Ren, Hongliang, Meng, Max Q. -H., Chen, Xijun, Sun, Haibin, Fan, Bin, Chan, Yawen, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Shen, Heng Tao, editor, Li, Jinbao, editor, Li, Minglu, editor, Ni, Jun, editor, and Wang, Wei, editor

Published
2006
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15. Nature and specificity of altered cognitive functioning in IBS

Author

Wong, Kenneth Man‐Fung, primary, Mak, Arthur Dun Ping, additional, Yuen, Suet Ying, additional, Leung, Owen Ngo Wang, additional, Ma, Duan Yang, additional, Chan, Yawen, additional, Cheong, Pui Kuan, additional, Lui, Rashid, additional, Wong, Sunny Hei, additional, and Wu, Justin Che‐Yuen, additional

Published
2019
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18. A symptom severity questionnaire for patients suffering from functional gastrointestinal disorder: FGI‐Checklist.

Author

Chan, Yawen, Cheong, Pui Kuan, Fang, Fanny Fan, Cheung, Cynthia K Y, Lan, Lin Lin, Yuen, Kay Wing Ki, Ching, Jessica Yuet Ling, Mak, Arthur Dun Ping, and Wu, Justin Che‐yuen

Subjects
*SYMPTOMS, *EXPLORATORY factor analysis, *IRRITABLE colon, *CRONBACH'S alpha, *FUNCTIONAL colonic diseases, *GASTROESOPHAGEAL reflux, *FOOD poisoning
Abstract

Background and Aim: A well‐validated, comprehensive checklist of functional gastrointestinal (FGI) disorder (FGID) symptom severity for tracking symptom profile changes over time is lacking. We aim to develop and validate a comprehensive symptom severity checklist for FGID. Methods: A 20‐item scale, including both upper and lower gastrointestinal symptoms, was generated to measure the symptom severity commonly found in FGID. Patients who experienced at least monthly symptoms of FGID with negative endoscopy findings were invited to complete the FGI‐Checklist, Patient Health Questionaire‐9 for assessing depressive symptoms, and Patient Health Questionnaire‐15 for assessing somatic symptoms at baseline. A subset of patients who met Rome III diagnostic criteria of gastroesophageal reflux disease, functional dyspepsia, and irritable bowel syndrome received medication treatment for 8–12 weeks and completed the FGI‐Checklist again at a follow‐up visit. Exploratory factor analysis was performed for subscales formation and psychometric properties were measured. Results: Six hundred and forty‐one patients were recruited for current study and 108 (16.8%) of them completed the FGI‐Checklist again at follow‐up. Exploratory factor analysis identified a five‐factor solution accounting for 66.8% of the total variance. The five factors are named esophageal syndrome, reflux syndrome, functional dyspepsia syndrome, nausea and vomiting syndrome, and abdominal and bowel syndrome. The FGI‐Checklist total score correlated with Patient Health Questionaire‐9 and Patient Health Questionnaire‐15 (all P < 0.001), which demonstrated good construct validity. Good item‐internal consistency was found (Cronbach's alphas: 0.69–0.87). Responsiveness for reflux syndrome subscale, functional dyspepsia syndrome subscale, and abdominal and bowel syndrome subscale after medication treatment was significant (paired‐t‐test: all P < 0.01). Conclusion: The instrument, Checklist, is valid and reliable. [ABSTRACT FROM AUTHOR]

Published
2020
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26. Does Acupuncture Therapy Alter Activation of Neural Pathway for Pain Perception in Irritable Bowel Syndrome?: A Comparative Study of True and Sham Acupuncture Using Functional Magnetic Resonance Imaging

Author

Chu, Winnie CW, primary, Wu, Justin CY, additional, Yew, David TW, additional, Zhang, Liang, additional, Shi, Lin, additional, Yeung, David KW, additional, Wang, Defeng, additional, Tong, Raymond KY, additional, Chan, Yawen, additional, Lao, Lixing, additional, Leung, Ping C, additional, Berman, Brian M, additional, and Sung, Joseph JY, additional

Published
2012
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36. High Incidence of Mortality and Recurrent Bleeding in Patients With Helicobacter pylori–Negative Idiopathic Bleeding Ulcers

Author

Wong, Grace Lai–Hung, primary, Wong, Vincent Wai–Sun, additional, Chan, Yawen, additional, Ching, Jessica Yuet–Ling, additional, Au, Kim, additional, Hui, Aric Josun, additional, Lai, Larry Hin, additional, Chow, Dorothy Kai–Lai, additional, Siu, Danny Ka–Fai, additional, Lui, Yan–Ni, additional, Wu, Justin Che–Yuen, additional, To, Ka–Fai, additional, Hung, Lawrence Cheung–Tsui, additional, Chan, Henry Lik–Yuen, additional, Sung, Joseph Jao–Yiu, additional, and Chan, Francis Ka–Leung, additional

Published
2009
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44. 860 On-Demand Versus Daily Proton Pump Inhibitor (PPI) for Maintenance Treatment of Gastroesophageal Reflux Disease (GERD): A Double Blind, Double Dummy, Randomized Placebo Controlled Trial and Cost-Effectiveness Analysis

Author

Wu, Justin, primary, Chan, Yawen, additional, Tsoi, Kelvin K., additional, Wong, Vincent W., additional, Lai, Larry, additional, Wong, Grace, additional, Chow, Dorothy K., additional, Chiu, Philip W., additional, Siu, Ka Fai Danny, additional, Sung, Joseph J., additional, and Chan, Francis K.L., additional

Published
2008
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48. The temporal relationship of daily life stress, emotions, and bowel symptoms in irritable bowel syndrome—Diarrhea subtype: A smartphone‐based experience sampling study.

Author

Chan, Yawen, So, Suzanne Ho‐wai, Mak, Arthur Dun Ping, Siah, Kewin Tien Ho, Chan, Wai, and Wu, Justin C. Y.

Subjects
*IRRITABLE colon, *PSYCHOLOGICAL stress
Abstract

Background: The current study aimed to model the moment‐to‐moment relationship between daily life stress, emotions, and bowel symptoms among patients with irritable bowel syndrome—diarrhea subtype (IBS‐D) in the flow of daily life using a smartphone‐based experience sampling method (ESM). Methods: Patients with IBS‐D (N = 27) and healthy controls (HC; N = 30) completed ESM ratings of their real‐time daily life stress, which was defined as subjective stress related to daily activities, both positive and negative emotions, as well as bowel symptoms eight times a day for 14 consecutive days, following a baseline interview measuring bowel and mood symptoms. Moment‐to‐moment association between ESM variables was tested within and between groups using multilevel regression modeling. Key Results: Patients with IBS‐D reported more severe bowel symptoms and lower positive affect than HCs, but levels of daily life stress and negative affect were comparable between groups. Time‐lagged analysis of ESM data revealed that, among patients with IBS‐D, daily life stress predicted a decrease in abdominal pain and urgency to defecation at a subsequent time point, whereas severity of bowel symptoms and occurrence of diarrhea predicted a subsequent increase in negative affect and daily life stress. The above associations were not found among HCs. Conclusions and Inferences: ESM unveiled the dynamic relationship between bowel symptoms, stress, and emotionality. Patients with IBS‐D responded to bowel symptoms with more stress and distress momentarily. Counter‐intuitively, daily life activity stress appeared to ameliorate bowel symptoms, although a more rigorous study design is required to testify this claim. Psychological understanding of IBS‐D is discussed. Using a smartphone‐based experience sampling method (ESM), the dynamic relationship between bowel symptoms, stress, and emotionality was unveiled. Patients with IBS‐D responded to bowel symptoms with more stress and distress momentarily. Counter‐intuitively, daily life activity stress appeared to ameliorate bowel symptoms, although a more rigorous study design is required to testify this claim. Psychological understanding of IBS‐D is discussed. [ABSTRACT FROM AUTHOR]

Published
2019
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