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Background: Adherence-to-colonoscopy in cascade screening of colorectal cancer (CRC) is crucial to the effectiveness of screening, but it has not been systematically evaluated. We aimed to evaluate the colonoscopy adherence among average-risk populations globally. Methods: We searched Pubmed, Embase, Web of Science, and Cochrane Library for observational and experimental studies published in English up to December 31, 2018 and reporting the colonoscopy adherence following positive initial screening. We calculated pooled adherence with its 95% confidence intervals (CIs) using a random-effects meta-analysis. Subgroup and mixed-effects meta-regression analysis were performed to evaluate heterogeneous factors for adherence. Findings: Of 9,772 articles identified, 191 (313 studies) were included in the systematic review. The pooled adherence-to-colonoscopy was 81·6% (95% CI: 79·6-83·4), with the estimates varying substantially by continents, CRC incidence, GDP per capita, recruitment method, screening round and type of initial test. Type of initial test was the most modifiable heterogeneous factor for adherence across studies (Q=53·00, P

OBJECTIVES This study aimed to evaluate the most updated worldwide distribution, risk factors, and temporal trends of cervical cancer for different countries and age groups. METHODS The Global Cancer Observatory database was retrieved for the age-standardized rates (ASRs, per 100,000 persons) for incidence and mortality of cervical cancer in 2018. The associations with risk factors were examined by multivariable regression analysis, adjusting for human development index (HDI) and gross domestic products (GDP) per capita. Joinpoint regression analysis was used to calculate the 10-year annual average percent change (AAPC) for incidence and mortality. RESULTS A total of 568,847 new cases (ASR, 13.1) and 311,365 deaths (ASR, 6.9) of cervical cancer were reported globally in 2018. The highest incidence and mortality were observed in Southern Africa (ASRs, 43.1 and 20.0) and countries with low HDI (ASRs, 29.8 and 23.0). Countries with higher incidence and mortality had lower HDI (β = -8.19, 95% CI -11.32 to -5.06, p

Background: This study investigated socioeconomic inequalities in premature cancer mortality by cancer types, and evaluated the associations between socioeconomic status (SES) and premature cancer mortality by cancer types. Methods: Using multiple databases, cancer mortality was linked to SES and other county characteristics. The outcome measure was cancer mortality among adults ages 25–64 years in 3,028 U.S. counties, from 1999 to 2018. Socioeconomic inequalities in mortality were calculated as a concentration index (CI) by income (annual median household income), educational attainment (% with bachelor's degree or higher), and unemployment rate. A hierarchical linear mixed model and dominance analyses were used to investigate SES associated with county-level mortality. The analyses were also conducted by cancer types. Results: CIs of SES factors varied by cancer types. Low-SES counties showed increasing trends in mortality, while high-SES counties showed decreasing trends. Socioeconomic inequalities in mortality among high-SES counties were larger than those among low-SES counties. SES explained 25.73% of the mortality. County-level cancer mortality was associated with income, educational attainment, and unemployment rate, at −0.24 [95% (CI): −0.36 to −0.12], −0.68 (95% CI: −0.87 to −0.50), and 1.50 (95% CI: 0.92–2.07) deaths per 100,000 population with one-unit SES factors increase, respectively, after controlling for health care environment and population health. Conclusions: SES acts as a key driver of premature cancer mortality, and socioeconomic inequalities differ by cancer types. Impact: Focused efforts that target socioeconomic drivers of mortalities and inequalities are warranted for designing cancer-prevention implementation strategies and control programs and policies for socioeconomically underprivileged groups.

Background and aim The reported prevalence and risk factors for sessile serrated lesions (SSLs) show significant variation. We aimed to specifically study the prevalence and potential risk factors of SSLs in an average risk colorectal cancer (CRC) screening population of Chinese subjects. Methods This is a case-control study of prospectively collected data from a territory-wide colorectal screening program in Hong Kong. Information on risk factors was obtained from questionnaires completed prior to screening colonoscopy. We compared subjects with SSLs against controls without these lesions to identify potential risk factors using multivariable logistic regression. Results Of 12 039 asymptomatic screening subjects, 6011 subjects received a screening colonoscopy with 2214 subjects (36.8%) having conventional adenomas, 486 subjects (8.1%) having hyperplastic polyps, and 85 subjects (1.4%) having SSLs only. Of these subjects, three had synchronous advanced adenomas and were excluded from the analysis. More than 60% of these lesions were in the proximal colon. We compared these 82 subjects with SSLs only and 3226 controls without any polyps. After multivariable logistic regression, age ≥ 66 years, smoking, and diabetes mellitus (DM) were significant independent risk factors for SSLs. Conclusion In this study, we report the prevalence of SSLs to be 1.4%. Age ≥ 66 years, smoking, and DM were independent risk factors for these lesions. Our findings provide relevant new data that should be taken into consideration when designing region-specific surveillance programs for SSLs with the ultimate goal of reducing the risk of CRC.

A quality of life assessment is useful in identifying a specific health impact on patients who are suffering from various medical conditions. This study estimated the quality of life among patients with cancers of the lungs, breast, colorectum, oesophagus, liver, and stomach in urban China and evaluates the associated factors. This study employed a random cluster sampling strategy to recruit patients with lung, breast, colorectal, oesophageal, liver, or stomach cancer from eleven third-grade class-A (the highest level) hospitals in Beijing between October 2013 and May 2014. We performed a quality of life survey that included solicitation of sociodemographic and clinical information and the use of a EuroQoL five-dimension three-level questionnaire. We applied the Chinese time trade-off method to calculate the health utility values, which were transformed into binary variables (using the median as the cut-off). In addition, multivariable logistic regression analysis was used to examine the factors associated with the quality of life. A total of 637 patients (91 with lung cancer, 152 with breast cancer, 60 with colorectal cancer, 108 with oesophageal cancer, 154 with liver cancer, and 72 with stomach cancer) were included in this study; the medians of the health utility values were 0.780, 0.800, 0.800, 0.860, 0.800, and 0.870, respectively. The most common concerns for patients of all six cancer types were pain/discomfort and anxiety/depression. The reported health status of patients was associated with various demographic and clinical variables. This study highlighted that pain relief and psychological support are important aspects of patient management for those with these types of cancer. Individuals with factors associated with a poorer quality of life should be targets for additional support.

Background Prostate-specific antigen (PSA) and prostate health index (PHI) have been used as biomarkers for prostate cancer detection. In this study, we aimed to evaluate the cost-effectiveness of PHI for prostate cancer detection in Chinese men. Method We developed a Markov model for Chinese male patient aged 50-75 years old. The PSA strategy was to offer TRUS-PB for all patients with elevated PSA of 4-10 ng/mL. The PHI strategy was to offer PHI for patients with elevated PSA of 4-10 ng/mL. TRUS-PB would only be offered for patients with PHI >35.0. Model inputs were extracted from local data when available. The cost per quality-adjusted life years gained for both strategies were calculated. The incremental cost-effectiveness ratios in relation to the willingness-to-pay (WTP) threshold were compared. One-way sensitivity analysis and probabilistic sensitivity analysis were performed. Cost-effectiveness acceptability curves were also constructed. Results With a Markov model of 25 screening cycles from age 50 to 75 years, the mean total costs per man were estimated to be USD 27,439 in the PSA strategy and USD 22,877 in the PHI strategy. The estimated effects were estimated to be 15.70 in the PSA strategy and 16.05 in the PHI strategy. The PHI strategy was associated with an expected decrease in cost of USD 4562 and an expected gain of 0.35 QALY, resulting in an ICER of USD -13056.56. The results were shown to be robust upon one-way sensitivity analysis. Upon Monte Carlo simulation, the PHI strategy was more cost-effective for 100% of the iterations. The PHI strategy demonstrated dominance over the PSA strategy regardless of what WTP threshold we use. Conclusions A PHI-based screening strategy may be more cost-effective than a PSA-based strategy for prostate cancer detection in Chinese men. These results support consideration of a PHI-based approach for prostate cancer in Hong Kong.

Background Although randomized controlled trials (RCTs) have suggested a non-significant increased risk of stroke among proton pump inhibitor (PPI) users, the association has not been confirmed. We evaluated the association between regular use of PPIs and incident stroke and identified population groups at high net risk. Methods This is a prospective analysis of 492,479 participants free of stroke from the UK biobank. Incident stroke was identified through linkage to hospital admission and death registries using the International Classification of Diseases (ICD)-10 codes (I60, I61, I63, and I64). We evaluated hazard ratios (HRs) adjusting for demographic factors, lifestyle habits, prevalent comorbidities, concomitant use of medications, and indications of PPIs. We assessed the risk differences (RDs) according to the baseline Framingham Stroke Risk Score. In the meta-analysis, we searched PubMed, EMBASE, and the Cochrane Central Register of Controlled Trials (from 1988 to 1 June 2020) for randomized trials comparing PPIs with other interventions, placebo, or no treatment on stroke risk. Results were combined using a fix-effect meta-analysis (Mantel-Haenszel method). Results We documented 5182 incident strokes over 3,935,030 person-years of follow-up. Regular PPI users had a 16% higher risk of stroke than non-users (HR 1.16, 95% CI 1.06 to 1.27). The estimated effect was similar to our meta-analysis of nine RCTs (case/participants 371/26,642; RR 1.22, 95% CI 1.00 to 1.50; quality of evidence: moderate). The absolute effect of PPI use on stroke increased with the baseline Framingham Stroke Risk Score, with an RD of 1.34‰, 3.32‰, 4.83‰, and 6.28‰ over 5 years for the lowest, quartile 2, quartile 3, and the highest quartile, respectively. Conclusions Regular use of PPIs was associated with an increased risk of stroke, with a higher absolute risk observed in individuals with high baseline stroke risk. Physicians should therefore exercise caution when prescribing PPIs. An assessment of the underlying stoke risk is recommended for individualized use of PPIs.

Background To evaluate the long-term association between organised colorectal cancer (CRC) screening and reduction of CRC-related mortality. Methods We systematically reviewed studies on organized CRC screening through PubMed, Ovid Medline, Embase and Cochrane database from its inception to November 2020. Moreover, we retrieved the matched CRC-related mortality (over 50 years) of those areas from the initial year of CRC screening programmes to the latest data available obtained from the International Agency for Research on Cancer (IARC). The mortality in the initial year and the latest year was used to calculate the age-standardised mortality ratio (ASMR). We adopted a random-effects model to synthesis the ASMR. Subgroup analyses were performed according to the screening period and modalities. Furthermore, a linear mixed model (LMM) was conducted as a sensitivity analysis. Results CRC screening programmes have been conducted in 58 countries/regions. After matching with the IARC database, we recorded >2.5 million CRC-related deaths from 22 countries where rollout screening programmes were performed. The screening modality with a provision of choice between faecal tests and colonoscopy as the primary screening test was associated with a 38.1% reduction in CRC mortality (ASMR=0.619, 95%CI: 0.549-0.698), which was higher than programmes that offered guaiac faecal occult blood test (gFOBT) (0.894, 0.835-0.958), faecal immunochemical tests (FIT) (0.879, 0.847-0.913), gFOBT or FIT (0.882, 0.835-0.932), and faecal tests or flexible sigmoidoscopy (0.840, 0.786-0.898). The longer duration of screening was associated with a higher reduction in the pooled ASMR. In particular, the pooled ASMR became non-significant (0.987, 0.934-1.043) when the FIT screening was implemented for less than 5 years (IDDF2021-ABS-0179 Figure 1. The pooled age-standardised colorectal cancer-related mortality ratio by screening modalities and screening duration). The LMM result also showed a 0.172 decrease in ASMR (P Conclusions A CRC screening programme running for >5 years was associated with a reduction of CRC-related mortality. Countries with a heavy burden of CRC should implement sustainable, organised CRC screening providing a choice between faecal tests and colonoscopy as a preferred primary screening test.

Background Sessile serrated lesion(SSL) is notorious for its malignancy potential and the difficulty to be detected and distinguished under endoscopy. This systematic review and meta-analysis aimed to evaluate endoscopic characteristics of SSL and delineate features that inform distinction between SSA/P and other types of lesions, including hyperplastic polyp (HP) and conventional adenoma. Methods MEDLINE, Embase and Cochrane Library from the inception to September 9, 2020, were searched for cohort, cross-sectional or case-control studies comparing endoscopic characteristics of SSL and other polyps. The primary outcome measure was the odds of finding specific endoscopic characteristics in patients with SSL compared with other types of polys in patients undergoing colorectal cancer screening. Results We included 74 studies from 16 countries comprising 34,535 SSL. Compared with HP, SSL was more likely to be in the right colon (OR 5.45; 95% CI 4.13-7.17; P 5mm vs. Conclusions We systematically synthesised current evidence on the discriminating endoscopic features of SSL. These findings could enhance the detection of SSL in endoscopy practice.

Key Points Question Is the global burden of gastric cancer increasing in younger adults compared with older adults? Findings In this cohort study of data from 1980 to 2018 covering more than 1 million cases of gastric cancer, an increasing incidence of gastric cancer was observed in individuals younger than 40 years in a significant number of countries, including Sweden, the UK, and Ecuador. Meaning These findings suggest that the prevention of gastric cancer should become a priority in clinical guidelines and policy agendas to ameliorate its associated morbidity and mortality, especially among younger populations., Importance Gastric cancer is one of the most common cancers, with a high mortality-to-incidence ratio. It is uncertain whether developed nations may encounter an increasing burden of gastric cancer in young adults, as occurs for other cancers. Objectives To evaluate the incidence and mortality of gastric cancer and compare the global incidence trends between younger (, This cohort study uses data from national and global cancer registries to evaluate the incidence and mortality of gastric cancer between 1980 and 2018 and compares the global incidence between younger and older populations.

This study aimed to evaluate the global distribution, associated factors, and epidemiologic trends of gallbladder cancer (GBC) by country, sex, and age groups. The Global Cancer Observatory was interrogated for the disease burden of GBC using age-standardized rates (ASR). The prevalence of different potential risk factors for each country was extracted from Global Health Observatory and their associations with GBC incidence and mortality were examined by linear regression analysis using beta coefficients (β). The Cancer Incidence in Five Continents I-XI and the WHO Mortality database were searched and Average Annual Percent Change (AAPC) was generated from joinpoint regression analysis. The incidence (ASR = 2.3) and mortality (ASR = 1.7) of GBC varied globally in 2018 and were higher in more developed countries and among females. Countries with higher incidence had higher human development index (βmale = 0.37; βfemale = 0.27), gross domestic products (βmale = 0.13) and higher prevalence of current smoking (βfemale = 0.05), overweight (βmale = 0.02), obesity (βmale = 0.03), and hypercholesterolaemia (βmale = 0.07). Similar patterns of associations were also observed for mortality with an additional association found for diabetes (βfemale = 0.07). Although there was an overall decreasing trend in mortality, an increasing trend in incidence was observed among some populations, particularly in males (AAPCs, 8.97 to 1.92) and in younger individuals aged

Introduction We aimed to identify gaps in knowledge, attitudes, and behaviours towards viral hepatitis among the Hong Kong public and provide insights to optimise local efforts towards achieving the World Health Organization's viral hepatitis elimination target. Methods A descriptive, cross-sectional, self-reported web-based questionnaire was administered to 500 individuals (aged ≥18 years) in Hong Kong. Questionnaire items explored the awareness and perceptions of viral hepatitis-related liver disease(s) and associated risk factors in English or traditional Chinese. Results The majority (>80%) were aware that chronic hepatitis B and/or C could increase the risks of developing liver cirrhosis, cancer, and/or failure. Only 55.8% had attended health screenings in the past 2 years, and 67.6% were unaware of their family's history of liver diseases. Misperceptions surrounding the knowledge and transmission risks of viral hepatitis strongly hint at the presence of social stigmatisation within the community. Many misperceived viral hepatitis as airborne or hereditary, and social behaviours (casual contact or dining with an infected person) as a transmission route. Furthermore, 62.4% were aware of hepatitis B vaccination, whereas 19.0% knew that hepatitis C cannot be prevented by vaccination. About 70% of respondents who were aware of mother-to-child transmission were willing to seek medical consultation in the event of pregnancy. Gaps in knowledge as well as the likelihood of seeking screening were observed across all age-groups and education levels. Conclusions Comprehensive hepatitis education strategies should be developed to address gaps in knowledge among the Hong Kong public towards viral hepatitis, especially misperceptions relevant to social stigmatisation and the importance of preventive measures, including vaccination and screening, when exposed to risk factors.

Objective Colorectal cancer screening programs frequently report problems ensuring adequate follow-up of positive fecal immunochemical tests (FITs). We investigated strategies implemented by ongoing screening programs to improve follow-up for FIT-positive participants, and explored associations between interventions and reported rates of follow-up. Methods We submitted an electronic survey to 58 colorectal cancer screening programs or affiliated researchers. Primary outcomes were the proportion of program participants with a positive FIT completing diagnostic colonoscopy, and patient, provider, and system-level interventions used to improve follow-up. We compare mean colonoscopy completion at six months in programs with and without interventions. Results Thirty-five programs completed the survey (60% response). The mean proportion of participants with a positive FIT who completed colonoscopy was 79% (standard deviation 16%). Programs used a mean of five interventions to improve follow-up. Programs using patient navigators had an 11% higher rate of colonoscopy completion at six months ( p = 0.05). Programs sending reminders to primary care providers when no colonoscopy has been completed had a 12% higher rate of colonoscopy completion ( p = 0.03). Other interventions were not associated with significant differences. Conclusions Almost all programs employ multiple interventions to ensure timely follow-up of positive FIT. The use of patient navigators and provider reminders is associated with higher rates of colonoscopy completion.

Globally, colorectal cancer (CRC) is a substantial public health burden, and it is increasingly affecting populations in Asian countries. The overall prevalence of CRC is reported to be low in Asia when compared with that in Western nations, yet it had the highest number of prevalent cases. This review described the prevalence of CRC in Asia according to the International Agency for Research on Cancer from World Health Organization (WHO) database and summarized its major risk factors. Non-modifiable factors include genetic factors, ethnicity, age, gender, family history and body height; smoking, alcohol drinking, weight, Westernized diet, physical inactivity, chronic diseases and microbiota were involved in environmental factors. These risk factors were separately discussed in this review according to published literature from Asian countries. CRC screening has been playing an important role in reducing its disease burden. Some recommendations on its screening practices have been formulated in guidelines for Asia Pacific countries.

To examine the effectiveness of telemonitoring and hemodynamic monitoring devices in reducing mortality rates in heart failure. PubMed and Cochrane Library were searched to 1 May 2017 for randomized controlled trials and real-world studies investigating the effects of telemonitoring or hemodynamic monitoring on mortality in heart failure. Heart failure is associated with increased mortality. Telemonitoring and hemodynamic monitoring have been shown to reduce mortality rates in some studies but not others. Fifty-two and five publications on telemonitoring and hemodynamic monitoring were included. In 23,233 patients (mean age 70 years, mean follow-up 12 ± 10 months), telemonitoring reduced all-cause mortality by 22% (HR = 0.78; 95% confidence interval (CI), 0.74–0.83; P 0.05). Overall, telemonitoring but not hemodynamic monitoring reduced mortality in heart failure.

Background/objective: The Active Healthy Kids 2018 Hong Kong Report Card provides evidence-based assessment across 12 indicators of physical activity behaviors, sleep, and related community and government initiatives for children and youth. Methods: The systematic development process provided by the Active Healthy Kids Global Alliance was used. The best available data from the past 10 years were reviewed by a panel of experts. According to predefined benchmarks, letter grades were assigned to 12 indicators (Overall Physical Activity, Organized Sport Participation, Active Play, Active Transportation, Sedentary Behaviors, Physical Fitness, Sleep, Family, School, Community and Environment, Government, and Obesity). Results: Three of the five activity behaviors received C- or C grades: Overall Physical Activity (C-), Sedentary Behaviors (C-), and Organized Sport Participation (C). Active Transportation was graded B + . Same to the 2016 Hong Kong Report Card, Active Play could not be graded. School and Government were graded C. Family and Community and Environment was graded D- and B, respectively. Three new indicators were added after the 2016 Report Card and they were graded from C- (Sleep) to D (Physical Fitness) or D- (Obesity). Conclusions: Children and youth in Hong Kong have low physical activity and physical fitness levels and high sedentary behaviors despite a generally favorable community environment. A high prevalence of obesity and low levels of family support warrant more public health action. Researchers should address the surveillance gap in active play and peer support. Keywords: Exercise, Family support, Overweight, Physical fitness, Sleep

Drawing is a major component of cognitive screening for dementia. It can be performed without language restriction. Drawing pictures under instructions and copying images are different screening approaches. The objective of this study was to compare the diagnostic performance between drawing under instructions and image copying for MCI and dementia screening.A literature search was carried out in the OVID databases with keywords related to drawing for cognitive screening. Study quality and risk of bias were assessed by QUADAS-2. The level of diagnostic accuracy across different drawing tests was pooled by bivariate analysis in a random effects model. The area under the hierarchical summary receiver-operating characteristic curve (AUC) was constructed to summarize the diagnostic performance.Ninety-two studies with sample size of 22,085 were included. The pooled results for drawing under instructions showed a sensitivity of 79% (95% CI: 76 - 83%) and a specificity of 80% (95% CI: 77 - 83%) with AUC of 0.87 (95% CI: 0.83 - 0.89). The pooled results for image copying showed a sensitivity of 71% (95% CI: 62 - 79%) and a specificity of 83% (95% CI: 72 - 90%) with AUC of 0.83 (95% CI: 0.80 - 0.86). Clock-drawing test was the screening test used in the majority of studies.Drawing under instructions showed a similar diagnostic performance when compared with image copying for cognitive screening and the administration of image copying is relatively simpler. Self-screening for dementia is feasible to be done at home in the near future.

Background: This study aimed to evaluate the updated disease burden, risk factors, and temporal trends of liver cancer based on age, sex, and country. Methods: We estimated the incidence of liver cancer and its attribution to hepatitis B virus (HBV) and hepatitis C virus (HCV) in 2018 based on the Global Cancer Observatory and World Health Organization (WHO) Cancer Causes database. We extracted the prevalence of risk factors from the WHO Global Health Observatory to examine the associations by weighted linear regression. The trend analysis used data from the Cancer Incidence in Five Continents and the WHO mortality database from 48 countries. Temporal patterns of incidence and mortality were calculated using average annual percent change (AAPC) by joinpoint regression analysis. Results: The global incidence of liver cancer was (age-standardized rate [ASR]) 9.3 per 100,000 population in 2018, and there was an evident disparity in the incidence related to HBV (ASR 0.2–41.2) and HCV (ASR 0.4–43.5). A higher HCV/HBV-related incidence ratio was associated with a higher level of alcohol consumption (β 0.49), overweight (β 0.51), obesity (β 0.64), elevated cholesterol (β 0.70), gross domestic product (β 0.20), and Human Development Index (HDI; β 0.45). An increasing trend in incidence was identified in many countries, especially for male individuals, population aged ≥50 years, and countries with a higher HCV/HBV-related liver cancer incidence ratio. Countries with the most drastic increase in male incidence were reported in India (AAPC 7.70), Ireland (AAPC 5.60), Sweden (AAPC 5.72), the UK (AAPC 5.59), and Norway (AAPC 4.87). Conclusion: We observed an overall increasing trend of liver cancer, especially among male subjects, older individuals, and countries with a higher prevalence of HCV-related liver cancer. More efforts are needed in enhancing lifestyle modifications and accessibility of antiviral treatment for these populations. Future studies should investigate the reasons behind these epidemiological changes.

Background: Sessile serrated adenoma/polyp is notorious for its malignancy potential and the difficulty to be detected and distinguished under endoscopy. This systematic review and meta-analysis aimed to evaluate endoscopic characteristics of SSA/P and delineate features that inform distinction between SSA/P and other types of lesions, including hyperplasitc polyp (HP) and conventional adenoma. Methods: MEDLINE, Embase and Cochrane Library from the inception to September 9, 2020 were searched for cohort, cross-sectional or case-control studies comparing endoscopic characteristics of SSA/P and other polyps. The primary outcome measure was the odds of finding specific endoscopic characteristics in patients with SSA/P compared with other types of polys in patients undergoing colorectal cancer screening. Findings: We included 74 studies from 16 countries comprising 34,535 SSA/P. Compared with HP, SSA/P was more likely to be in the right colon (OR 5.45; 95% CI 4.13-7.17; P 5mm vs.

OBJECTIVE This study aimed to evaluate how the knowledge and perception towards colorectal cancer (CRC) screening had been changed in a large population, and identified factors associated with its participation based on factors pertinent to the Health Belief Model (HBM). METHODS Data from 3600 screening participants and 3600 non-participants were collected through a telephone survey via simple random sampling of telephone numbers in a territory-wide directory from December 2016 to November 2018. Sociodemographic factors; the enabling factors of screening as well as the barriers of screening were collected. The changes in these factors were evaluated by Pearson's chi-square trend test. A logistic regression model was constructed to identify the association between the above factors and CRC screening participation. RESULTS The knowledge level (67.9% to 85.4%, p

Simple Summary Esophageal cancer is the seventh most common cancer globally. Preventive measures and clinical management differ based on histologic subtype. However, information has been lacking on its most recent patterns according to histological subtype, associated risk factors, and epidemiological trends on a global scale. This study is a global analysis of the incidence/mortality trends of esophageal cancer in more than 48 countries/regions based on high quality population-based registries. We conclude that adenocarcinoma has already surpassed squamous cell carcinoma as the most frequent type of esophageal cancer in some western countries and is expected to increase in other countries. It is important to closely monitor and slow down the growing rates of obesity and metabolic syndrome, which are the important risk factors for adenocarcinoma. With the development of more advanced and less invasive technology, population-based targeted screening endoscopy would be recommended for high-risk individuals. Abstract This study aimed to examine the global burden, risk factors, and trends of esophageal cancer based on age, sex, and histological subtype. The data were retrieved from cancer registries database from 48 countries in the period 1980–2017. Temporal patterns of incidence and mortality were evaluated by average annual percent change (AAPC) using joinpoint regression. Associations with risk factors were examined by linear regression. The highest incidence of esophageal cancer was observed in Eastern Asia. The highest incidence of adenocarcinoma (AC) was found in the Netherlands, the United Kingdom, and Ireland. A higher AC/squamous cell carcinoma (SCC) incidence ratio was associated with a higher prevalence of obesity and elevated cholesterol. We observed an incidence increase (including AC and SCC) in some countries, with the Czech Republic (female: AAPC 4.66), Spain (female: 3.41), Norway (male: 3.10), Japan (female: 2.18), Thailand (male: 2.17), the Netherlands (male: 2.11; female: 1.88), and Canada (male: 1.51) showing the most significant increase. Countries with increasing mortality included Thailand (male: 5.24), Austria (female: 3.67), Latvia (male: 2.33), and Portugal (male: 1.12). Although the incidence of esophageal cancer showed an overall decreasing trend, an increasing trend was observed in some countries with high AC/SCC incidence ratios. More preventive measures are needed for these countries.

Background This study aimed to evaluate the updated incidence, mortality, risk factors, and epidemiologic trends of colorectal cancer (CRC) for different regions and sex using publicly available data from 186 countries. Methods The Global Cancer Observatory (GLOBOCAN) database was retrieved for the age-standardized rates (ASR) for incidence and mortality of CRC in 2018 and 2012. The prevalence of risk factors (2008–2016) was retrieved from the Global Health Observatory database. The associations between the prevalence of risk factors and incidence and mortality of CRC and were measured using beta coefficients (β) with 95% confidence intervals (CI) generated from a univariable linear regression analysis. Results In 2018, the highest incidence and mortality of CRC were in regions of very high human development index (HDI) (ASRs, 30.6 and 11.1) with men to women ratio of 1.4 and 1.2. Population in countries with higher incidence have higher alcohol consumption (β=1.30, 95% CI 1.02 to 1.57 for men; β=0.46, CI 0.35 to 0.57 for women), higher prevalence of tobacco use (β=0.11, CI 0.02 to 0.19 for women), insufficient physical activity (β=0.59, CI 0.34 to 0.84; β=0.19, CI 0.09 to 0.29), overweight (β=0.47, CI 0.38 to 0.57; β=0.16, CI 0.12 to 0.20), obesity (β=0.24, CI 0.11 to 0.38; β=0.34, CI 0.25 to 0.43), and elevated cholesterol (β=1.80, CI 1.53 to 2.07; β=1.22, CI 1.05 to 1.38). Similar associations were also found for mortality (figure 1). From 2012 to 2018, there was an overall increase in the trend of incidence and mortality, particularly in Asia (+29.7% and +17.4%) and Africa (+24.3% and +17.6%), and among men (+14.6% and +8.0%) compared with women (+14.0% and +4.3%). Conclusions The variation in disease burden of CRC was associated with HDI and the prevalence of risk factors. There was an increasing trend in the incidence and mortality of CRC, particularly in regions with low and middle incomes and among men. More intensive lifestyle modifications and population-based screening are recommended for these populations.

Background The success of population-based colorectal cancer (CRC) screening is dependent on the optimal achievement of various targets. We estimated the pooled performance indicators of CRC screening programmes that used faecal immunochemical tests (FIT) as a primary screening modality and colonoscopy as a subsequent confirmatory test in various countries. Methods We searched PubMed, Ovid MEDLINE, Embase, and Cochrane from inception to 1st Jan 2020. We included original articles published in the English language describing population-based CRC screening programme that used FIT and colonoscopy, and relevant national CRC screening reports by hand searching. We extracted data to pool early performance indicators, including participation rate, invalid FIT rate, FIT positive rate, adenoma/CRC detection rate of FIT, colonoscopy compliance rate, rate of adequate bowel preparation, colonoscopy completion rate, colonoscopy complication rate, and positive predictive values (PPV) of FIT for adenoma/CRC. We used Metaprop to conduct a meta-analysis via R software (version 3.6.3). The Freeman-Tukey double arcsine transformation was used to stabilise the variances, and a random-effects model was used to pool the rates with proportions. Results A total of 85 studies (64 articles and 21 reports) were included in this meta-analysis. The pooled participation rate was 52.2%, and the pooled proportion of invalid FIT was 1.0%. The FIT positive rate was 7.0%, the adenoma detection rate was 21.8‰, and the CRC detection rate was 2.5‰. In addition, the colonoscopy compliance rate (79.1%), rate of adequate bowel preparation (86.3%), and the colonoscopy completion rate (93.1%) were high. We found the pooled complication rate of 0.3%, with PPVs of FIT being 39.2% (for adenoma) and 4.7% (for CRC). The range of all indicators varied substantially. In subgroup analysis, a higher FIT cut-off value indicated lower positivity and lower adenoma detection rate. Compared with CRC screening programmes with one FIT, those with two FIT had lower participation rate (48.8% vs 55.5%) but higher positive rate (8.9% vs 5.8%) and adenoma detection rate (21.8‰ vs 17.3‰). Conclusions Our findings reported the pooled performance indicators of different CRC screening programmes. The summary measures could inform the benchmarking of performance indicator targets across different CRC screening programmes.

Background Liver cancer is the sixth most common cancer and the fourth leading cause of cancer mortality globally. The global ASR of incidence of liver cancer was 9.3 per 100,000 persons in 2018. There was an estimated total of 471,000 and 168,200 new cases of liver cancer attributable to HBV and HCV in 2018, respectively. This study aimed to evaluate the association between incidence of liver cancer and its risk factors among 185 countries. Methods The Age-standardised rates (ASR) for incidence of liver cancer in 2018 were extracted from Global Cancer Observatory (GLOBOCAN). The prevalence of smoking, alcohol consumption, obesity, and diabetes in 2010 for each country were retrieved from the Global Health Observatory (GHO). Primary Outcome: To determine the association between incidence (ASR) and prevalence of risk factors by using multivariable linear regression adjusting for human development index (HDI) and gross domestic product (GDP) per capita. Results The country with higher incidence was associated with a higher prevalence of smoking (males: β=0.25, p=0.028) and alcohol consumption (females: β=0.94, p=0.042) (table 1: β, beta coefficient refers to how much does the incidence (ASR) change per unit increase in risk factor). No association between the incidence and body mass index (BMI) or diabetes were found in the current analysis (p>0.05). Conclusions Smoking and alcohol consumption remain as important risk factors for liver cancer at a country level. Smoking was associated with an increased risk of Country-specific preventive strategies in the reduction of liver cancer burden includes promoting smoking cessation and alcohol control for high-risk populations.

Background This study aimed to evaluate the global incidence, mortality of gallbladder cancer, and their associations with human development index (HDI), gross domestic products (GDP), smoking, alcohol drinking, and overweight for 180 countries. Methods The regional and national incidence and mortality figures for gallbladder cancer in 2018 were retrieved from the GLOBALCAN database. Age-standardized rates (ASRs) were evaluated by the Segi–Doll world standard population. HDI and GDP per capita in 2018 for each country were collected from the United Nation and World Bank. Prevalence of smoking, alcohol drinking, and overweight in 2010 was retrieved from the Global Health Observatory. The association between the incidence/mortality and these factors was examined by Pearson’s correlation coefficient (r). Results The global ASR of the incidence of gallbladder cancer was 2.3 per 100,000 persons in 2018. The highest rates were reported in Eastern Asia (ASR=3.0), whilst the lowest rates were found in Middle Africa (0.35). The incidence was the highest in countries with very high HDI (2.5) as compared to those with high (2.4), medium (2.0), and low HDI (0.55). Countries with higher incidence were correlated with higher HDI (r=0.31, p 0.05). Conclusions Higher incidence and mortality of gallbladder cancer were found in regions with higher HDI, higher prevalence of smoking and overweight. With population aging and growth, we might expect a further substantial increase in its disease burden, especially for countries with high socioeconomic development. Preventive interventions on reducing the prevalence of risk factors for gallbladder cancer are warranted.

Background Worldwide, oesophageal cancer is one of the most common cancers and a leading cause of cancer mortality. Owing to its aggressive disease nature and poor survival rate, it contributes to a substantial burden to global health and clinical practice. This study aimed to estimate the worldwide incidence and risk factors of oesophageal cancer by histological subtypes using data from 178 countries. Methods The data on the incidence of oesophageal cancer by histological types in 2018 were estimated from GLOBALCAN and Cancer Incidence in Five Continents (CI5). Age-standardized rates (ASRs) for oesophageal cancer incidence by histological subtypes were evaluated by Segi–Doll population. The prevalence of tobacco use, alcohol drinking, physical inactivity, obesity, diabetes, and lipid disorders for each country were retrieved from the Global Health Observatory. The association between the ratio of histological subtypes and risk factors was examined by multivariable linear regression. Results We estimated a total of 63,470 (12.6%) and 502,669 new cases of oesophageal adenocarcinoma (AC) and squamous cell carcinoma (SCC) in 2018, respectively. The incidence among males was 3.6-fold and 2.2-fold of that among females for AC and SCC, respectively. The highest AC:SCC ratio was found in the UK (ratio 2.880, ASR 7.5), New Zealand (2.667, 4.2), the Netherlands (2.536, 7.7), Bahrain (2.143, 0.9), and Canada (2.000, 3.7) among males (figure 1). As for females, the highest AC:SCC ratio was observed in Moldova (1.000, 0.2), the Netherlands (0.800, 1.2), Iceland (0.750; 0.5), the UK (0.700; 1.4), and Cyprus (0.667; 0.3). A higher AC:SCC ratio was associated with a higher prevalence of obesity (male: β 0.039, 95% CI 0.023 to 0.055; female: 0.009, 0.004 to 0.146) and high cholesterol (male: 0.028, 0.010 to 0.047; female: 0.011, 0.004 to 0.019); but a lower prevalence of tobacco use (male: -0.007, -0.014 to -0.001) and diabetes (male: 0.009, 0.004 to 0.146; female: -0.021, -0.038 to -0.003). Conclusions While SCC is the predominant subtype of oesophageal cancer, the incidence of AC has surpassed SCC in a substantial proportion of countries, probably due to the increasing prevalence of obesity and metabolic disorders. Future research should investigate the reasons behind these epidemiological changes.

Kidney cancer is a major urological disease globally, with more than 400 000 new cases diagnosed every year.To investigate incidence and mortality trends for kidney cancer and their associations with modifiable risk factors for kidney cancer.The most up-to-date figures on kidney cancer incidence and mortality were collected from the GLOBOCAN database and the Cancer Incidence in Five Continents (CI5). Data on total alcohol consumption and the prevalence of smoking, overweight, diabetes, and hypertension were extracted from the World Health Organization Global Health Observatory data repository.Age-standardized rates (ASRs) for incidence and mortality and their correlations with potential risk factors for kidney cancer were investigated. Multivariable linear regression analysis was also conducted. The 10-yr temporal patterns for incidence are presented as the average annual percent change with 95% confidence interval using joinpoint regression analysis.Globally, there is wide variation in kidney cancer incidence and mortality. There were positive correlations between rates of smoking, alcohol consumption, and overweight and ASRs of kidney cancer incidence and mortality. Multivariable regression analysis revealed that alcohol consumption and overweight were significant risk factors for kidney cancer incidence, while smoking and alcohol consumption were significant risk factors for kidney cancer mortality. There was an increasing trend for the incidence of kidney cancer globally, with a particularly prominent trend for European countries. Of note, increasing incidence of kidney cancer is evident even for younger individuals aged50 yr. However, cancer registries vary by country and period and there is a lack of data regarding the severity of risk factors and disease characteristics such as the distribution of histological groups, tumor grading, and staging.There is an increasing trend for kidney cancer incidence globally, particularly in European countries and the younger population. Modifiable risk factors for kidney cancer incidence and mortality have been identified. The increasing incidence of kidney cancer among younger individuals is worrying and warrants early action on possible preventive measures.The incidence of kidney cancer has been increasing globally, particularly in European countries and the younger population. Risk factors include smoking, alcohol consumption, overweight, and hypertension, and these factors are all modifiable.

ObjectiveColorectal cancer (CRC) ranked second in terms of cancer mortality worldwide. It is associated with a substantial global disease burden. We aimed to examine whether the theory of planned behaviour (TPB) could predict the uptake of faecal immunochemical test to inform novel strategies for enhancing CRC screening participation in population-based programmes.DesignCross-sectional study.SettingsA Hong Kong-based and territory-wide telephone survey was conducted during the study period from October 2017 to November 2018.Participants4800 asymptomatic individuals aged 61–70 years who can communicate in Cantonese were recruited during the survey period. Those who had a history of CRC, chronic bowel inflammation, two or more first-degree relatives with CRC, and received colonoscopy in the past 10 years or faecal occult blood test in the past 5 years were excluded.Outcome measuresThe association between CRC screening uptake and the factors pertinent to TPB was analysed by univariable and multivariable regression models and the mediating effect of intention. We adjusted for age, gender, educational level, marital and working status, as well as household income.ResultsMultivariable regression analysis showed that high perceived behavioural control (adjusted OR (AOR)=12.35, 95% CI 8.21 to 18.60, pConclusionsThe variables pertinent to TPB could successfully predict CRC screening uptake. Promotion of CRC screening based on interventions that increase perceived behavioural control and behavioural intention could potentially enhance screening uptake. Further studies are needed to establish the cause and effect relationship among these variables and screening uptake, as well as to evaluate the cost-effectiveness of such interventions.

ObjectiveThe association between the regular use of proton pump inhibitors (PPIs) and the risk of type 2 diabetes remains unclear, although a recent randomised controlled trial showed a trend towards increased risk. This study was undertaken to evaluate the regular use of PPIs and risk of type 2 diabetes.MethodThis is a prospective analysis of 204 689 participants free of diabetes in the Nurses' Health Study (NHS), NHS II and Health Professionals Follow-up Study (HPFS). Type 2 diabetes was confirmed using American Diabetes Association (ADA) diagnostic criteria. We evaluated hazard ratios (HRs) adjusting for demographic factors, lifestyle habits, the presence of comorbidities, use of other medications and clinical indications.ResultsWe documented 10 105 incident cases of diabetes over 2 127 471 person-years of follow-up. Regular PPI users had a 24% higher risk of diabetes than non-users (HR 1.24, 95% CI 1.17 to 1.31). The risk of diabetes increased with duration of PPI use. Fully adjusted HRs were 1.05 (95% CI 0.93 to 1.19) for participants who used PPIs for >0–2 years and 1.26 (95% CI 1.18 to 1.35) for participants who used PPIs for >2 years compared with non-users.ConclusionsRegular use of PPIs was associated with a higher risk of type 2 diabetes and the risk increased with longer duration of use. Physicians should therefore exercise caution when prescribing PPIs, particularly for long-term use.

We aimed to examine the global prevalences of central obesity according to age, sex, race, place of residence, geographical region, national income level, and the definitions of central obesity. MEDLINE and Embase were searched. Studies with sample size of ≥ 500 and investigated individuals aged ≥ 15 years were included. Metaprop (a Stata command) was adopted to conduct a meta-analysis of prevalence, and the Freeman-Tukey Double Arcsine Transformation was used to stabilize the variances. A random-effects model was used to evaluate the prevalence and 95% confidence intervals (CI) of central obesity. There were 288 studies involving 13,233,675 individuals in this analysis. The overall prevalence of central obesity was 41.5% (95% CI 39.9–43.2%). A higher prevalence was found in older individuals, female subjects, urban residents, Caucasians, and populations of higher income level countries. Regarding regional variations, the highest prevalence was found in Sothern America (55.1%, 95% CI 45.8–64.3%) and Central American (52.9%, 95% CI 32.7–72.7%). Its prevalence was rapidly rising from 1985 to 2014. From 1985–1999 to 2010–2014, younger subjects aged 15–40 years showed a more drastic rise in prevalence (16.3 to 33.9%) than subjects aged > 40 years (43.6 to 57.9%). Male individuals have a more drastic rise (25.3 to 41.6%) than females (38.6 to 49.7%). Major increasing in prevalence of the condition in the past three decades, particularly in certain subgroups. These findings could act as a useful reference to inform public health strategies to minimize the impact of central obesity on population health. Electronic supplementary material The online version of this article (10.1007/s10654-020-00650-3) contains supplementary material, which is available to authorized users.

Background & Aims We evaluated global and regional burdens of, risk factors for, and epidemiologic trends in pancreatic cancer among groups of different sexes and ages. Methods We used data from the GLOBOCAN database to estimate pancreatic cancer incidence and mortality in 184 countries. We examined the association between lifestyle and metabolic risk factors, extracted from the World Health Organization Global Health Observatory database, and pancreatic cancer incidence and mortality by univariable and multivariable linear regression. We retrieved country-specific age-standardized rates (ASRs) of incidence and mortalities from cancer registries from 48 countries through 2017 for trend analysis by joinpoint regression analysis. Results The highest incidence and mortality of pancreatic cancer were in regions with very high (ASRs, 7.7 and 4.9) and high human development indexes (ASRs, 6.9 and 4.6) in 2018. Countries with higher incidence and mortality were more likely to have higher prevalence of smoking, alcohol drinking, physical inactivity, obesity, hypertension, and high cholesterol. From 2008 to 2017, 2007 to 2016, or 2003 to 2012, depending on the availability of the data, there were increases in incidence among men and women in 14 (average annual percent changes [AAPCs], 8.85 to 0.41) and 17 (AAPCs, 6.04 to 0.87) countries, respectively. For mortality, the increase was observed in 8 (AAPCs, 4.20 to 0.55) countries among men and 14 (AAPCs, 5.83 to 0.78) countries among women. Although the incidence increased in 18 countries (AAPCs, 7.83 to 0.91) among individuals 50 years or older, an increasing trend in pancreatic cancer was also identified among individuals younger than 50 years and 40 years in 8 (AAPCs, 8.75 to 2.82) and 4 (AAPCs, 11.07 to 8.31) countries, respectively. Conclusions In an analysis of data from 48 countries, we found increasing incidence and mortality trends in pancreatic cancer, especially among women and populations 50 years or older, but also among younger individuals. More preventive efforts are recommended for these populations.

Background Bladder cancer is a major urological disease, with approximately 550 000 new cases diagnosed in 2018. Objective We examined gender-specific incidence and mortality patterns, and trends of bladder cancer from a global perspective. We further investigated their associations with tobacco use and gross domestic product (GDP) per capita. Design, setting, and participants We retrieved data on the incidence and mortality of bladder cancer from the GLOBOCAN database, Cancer Incidence in Five Continents, and the WHO mortality database. Data on the rate of tobacco use were retrieved from the WHO Global Health Observatory. Data on GDP per capita was retrieved from the United Nations Human Development Report. Outcome measurements and statistical analysis We performed two sets of analyses. The first set of analysis is based on bladder cancer incidence and mortality data in 2018. The gender-specific age-standardised rates (ASRs) of incidence and mortality, and their correlations with the rate of tobacco use and GDP per capita were investigated. A multivariable linear regression analysis was also performed. In the second set of analysis, we examined the 10-yr temporal trends of bladder cancer incidence and mortality by average annual percent change using joinpoint regression analysis. A further exploratory analysis on GDP per capita in countries with decreasing trends of tobacco use was also performed. Results and limitations Wide variations in bladder cancer incidence and mortality were observed globally. There were positive correlations between the rate of tobacco use and the ASRs of bladder cancer incidence (r = 0.20) and mortality (r = 0.38) in men, and between the rate of tobacco use and the ASRs of bladder cancer incidence (r = 0.67) and mortality (r = 0.22) in women. There were positive correlations between GDP per capita, and the ASRs of bladder cancer incidence in men (r = 0.48) and women (r = 0.44). There was a weak positive correlation between GDP per capita and bladder cancer mortality in men (r = 0.19), but no correlation with bladder cancer mortality in women (r = 0.06). Upon multivariable linear regression analysis, tobacco use was significantly associated with bladder cancer incidence and mortality in men, and bladder cancer incidence in women. Regarding the 10-yr temporal trends of bladder cancer, Europe has an increasing incidence but decreasing mortality, and Asia has a decreasing incidence but increasing male mortality. Among countries with decreasing trends of tobacco use, the mean GDP per capita was higher in countries with decreasing trends of bladder cancer mortality than in those with increasing trends of bladder cancer mortality. A major limitation of the study is that cancer incidence might be underdetected and under-reported in less developed nations. Conclusions There were observable trends of bladder cancer incidence and mortality globally. Tobacco use was significantly associated with both bladder cancer incidence and mortality. A certain level of economic capacity might be needed to further reduce bladder cancer mortality in countries with a decreasing trend of tobacco use. Patient summary There are different trends of bladder cancer incidence and mortality globally. Smoking is significantly associated with the incidence and mortality of bladder cancer. A higher financial capacity may be needed to further improve the disease outcomes.

Patients with hypertension may develop a thoracic aortic aneurysm (TAA) that can be asymptomatic but potentially life-threatening. We sought to assess the prevalence of asymptomatic TAA among hypertensive patients with a point-of-care screening program using pocket-size mobile echocardiographic (PME) devices.We prospectively performed transthoracic aortic ultrasound using a PME device on patients attending our hypertension clinics between June 2016 and July 2018. The echo examinations were performed by a research fellow to obtain aortic diameter measurements including the aortic sinus, sinotubular junction, ascending aorta, aortic arch, and descending thoracic aorta through various standard echo views. Images were stored on the PME and transferred to a desktop computer for measurements and further statistical analysis.During the study period 1529 hypertensive patients (mean age, 62 years [range, 30-85]; 824 men) were recruited. The prevalence of TAA (defined as maximum aortic diameter ≥ 4.5 cm and/or50% larger than the diameter of the adjacent normal aorta) in our study population was 7.5% (115/1529). Multiple logistic regression analysis identified male gender (odds ratio, 2.120; P.001) and older age (odds ratio, 1.031; P.001) as independent factors associated with TAA.Silent TAA is common among hypertensive patients in Hong Kong. We found the PME device to be effective in detecting TAA in a clinic setting. Such an approach may be useful for early detection of TAA among at-risk patients, allowing aggressive blood pressure control and early surgical intervention to prevent catastrophic complications.

Background Brugada syndrome is an ion channelopathy that predisposes affected subjects to ventricular tachycardia/fibrillation (VT/VF), potentially leading to sudden cardiac death (SCD). Tpeak-Tend intervals, (Tpeak-Tend)/QT ratio and Tpeak-Tend dispersion have been proposed for risk stratification, but their predictive values in Brugada syndrome have been challenged recently. Methods A systematic review and meta-analysis was conducted to examine their values in predicting arrhythmic and mortality outcomes in Brugada Syndrome. PubMed and Embase databases were searched until 1 May 2018, identifying 29 and 57 studies. Results Nine studies involving 1740 subjects (mean age 45 years old, 80% male, mean follow-up duration was 68 ± 27 months) were included. The mean Tpeak-Tend interval was 98.9 ms (95% CI: 90.5-107.2 ms) for patients with adverse events (ventricular arrhythmias or SCD) compared to 87.7 ms (95% CI: 80.5-94.9 ms) for those without such events, with a mean difference of 11.9 ms (95% CI: 3.6-20.2 ms, P = 0.005; I 2 = 86%). Higher (Tpeak-Tend)/QT ratios (mean difference = 0.019, 95% CI: 0.003-0.036, P = 0.024; I 2 = 74%) and Tpeak-Tend dispersion (mean difference = 7.8 ms, 95% CI: 2.1-13.4 ms, P = 0.007; I 2 = 80%) were observed for the event-positive group. Conclusion Tpeak-Tend interval, (Tpeak-Tend)/QT ratio and Tpeak-Tend dispersion were higher in high-risk than low-risk Brugada subjects, and thus offer incremental value for risk stratification.

Background and Aim: A proper colonoscopy referral criterion is essential for flexible sigmoidoscopy‐based colorectal cancer screening. We aimed to compare the predictive capability of four existing criteria to detect proximal neoplasia (PN) and advanced proximal neoplasia (APN) in a Chinese population. Methods: Asymptomatic Chinese participants aged 50–75 years, who received screening colonoscopy, were consecutively recruited. The four criteria included (i) UK flexible sigmoidoscopy; (ii) Italian Screening for COlon REctum; (iii) NORwegian Colorectal Cancer Prevention trial; and (iv) US clinical index. The sensitivity, specificity, positive/negative predictive value, and the number of subjects needed to screen (NNS)/refer (NNR) to detect one APN/PN were examined. The area under receiver operating characteristic curve was evaluated. Results: Among 5833 subjects, 749 (12.8%) and 151 (2.6%) cases were found to have PN and APN, respectively. US criteria achieved the highest sensitivity for PN (49%) and APN (66%), while UK criteria attained the highest specificity (93%) for PN/APN. The lowest NNS was required by US criteria for PN (16 vs 19–38) and APN (58 vs 69–86), while the lowest NNR was required by UK criteria for PN (3.2 vs 4.0–4.8) and APN (7 vs 10–16). The receiver operating characteristic of all four criteria was 0.57–0.61 for PN and 0.68–0.70 for APN. Conclusions: Among all the four criteria, US criteria had the highest sensitivity and lowest NNS, while UK criteria achieved the highest specificity and lowest NNR. Their limited discriminatory capability highlighted the need for a new score to predict PN/APN in Chinese populations.

In Hong Kong, breast cancer is the most common cancer among women and poses a significant health care burden. The Cancer Expert Working Group on Cancer Prevention and Screening (CEWG) was set up in 2002 by the Cancer Coordinating Committee to review and assess local and international scientific evidence, and to formulate recommendations for cancer prevention and screening. After considering the local epidemiology, emerging scientific evidence, and local and overseas screening practices, the CEWG concluded that it was unclear whether population-based breast cancer screening did more harm than good in local asymptomatic women at average risk. The CEWG considers that there is insufficient evidence to recommend for or against population-based mammography screening for such individuals. Women who consider breast cancer screening should be adequately informed about the benefits and harms. The CEWG recommends that all women adopt primary preventive measures, be breast aware, and seek timely medical attention for suspicious symptoms. For women at high risk of breast cancer, such as carriers of confirmed BRCA1/2 deleterious mutations and those with a family history of breast cancer, the CEWG recommends that they seek doctor's advice for annual mammography screening and the age at which the process should commence. Additional annual screening by magnetic resonance imaging is recommended for confirmed BRCA1/2 mutation carriers or women who have undergone radiation therapy to the chest between the age of 10 and 30 years. Women at moderate risk of breast cancer should discuss with doctors the pros and cons of breast cancer screening before making an informed decision about mammography screening every 2 to 3 years.

Background Fibroblast growth factor 21 is a signalling protein involved in cell differentiation, morphogenesis, proliferation and metabolism. Recent studies have associated increased levels of FGF21 in the development of cardiovascular diseases, whereas others have reported no significant associations. Therefore, this systematic review and meta-analysis evaluated the value in predicting the risk of cardio-metabolic disorders and mortality. Methods PubMed and EMBASE were searched until 5th September 2017 for studies that evaluated the roles of FGF21 levels in cardio-metabolic disorders. Results A total of 183 and 301 entries were retrieved; 24 studies met the inclusion criteria. Four studies were identified by an additional search. Therefore, 28 studies were included in the final meta-analysis. High FGF21 levels significantly predicted the incidence of coronary artery disease (hazard ratio [HR]: 1.29; 95% confidence interval [CI]: 1.06–1.55; P Conclusion FGF21 significantly predicts the incidence of coronary artery disease, the risks of metabolic syndrome, diabetes mellitus and renal progression in diabetes. It also predicted all-cause and cardiovascular mortality.

Background and objectives Congenital long QT syndrome (LQTS) predisposes affected individuals to ventricular tachycardia/fibrillation (VF/VF), potentially resulting in sudden cardiac death. The Tpeak–Tend interval and the Tpeak–Tend/QT ratio, electrocardiographic markers of dispersion of ventricular repolarization, were proposed for risk stratification but their predictive values in LQTS have been controversial. A systematic review and meta-analysis was conducted to examine the value of Tpeak–Tend intervals and Tpeak–Tend/QT ratios in predicting arrhythmic and mortality outcomes in congenital LQTS. Method PubMed and Embase databases were searched until 9th May 2017, identifying 199 studies. Results Five studies on long QT syndrome were included in the final meta-analysis. Tpeak–Tend intervals were longer (mean difference [MD]: 13 ms, standard error [SE]: 4 ms, P = 0.002; I2 = 34%) in congenital LQTS patients with adverse events [syncope, ventricular arrhythmias or sudden cardiac death] compared to LQTS patients without such events. By contrast, Tpeak–Tend/QT ratios were not significantly different between the two groups (MD: 0.02, SE: 0.02, P = 0.26; I2 = 0%). Conclusion This meta-analysis showed that Tpeak–Tend interval is significant higher in individuals who are at elevated risk of adverse events in congenital LQTS, offering incremental value for risk stratification.

Background Pancreatic cancer has been associated with lifestyle factors, but few comparative studies were conducted among countries of different culture and lifestyle habits. This study compared the trends of pancreatic cancer incidence and birth cohort effects in the United States and urban China and explored the potential discrepancies of risk patterns. Materials and methods Age-standardized incidence rates (ASIRs) were calculated using data from national or regional cancer registries of the United States and two large cities of China (Shanghai, Hong Kong). The temporal trends of incidence were assessed by joinpoint regression. The effects of birth cohort and calendar period were identified through age–period–cohort modeling. Results The ASIR in the United States from 1976 to 2015 was 8.26/100 000, which was higher than that in Hong Kong (4.29/100 000) and Shanghai of China (6.63/100 000). Shanghai had lower incidence (4.41/100 000) in 1976-1980 but increased annually by 1.38% in males and 1.67% in females, with a sharper upward trend than the United States and Hong Kong. Males had higher risks than females, with a male-to-female ratio of 1.34, 1.44, and 1.37 in the United States, Hong Kong, and Shanghai, respectively. A significant and prominent increase in incidence rate was observed among successive generations in China particularly for Shanghai, but such a pattern was not apparent in the United States. Conclusions The differences in pancreatic cancer incidence by sex may be multi-factorial involving known risk factors like tobacco smoking and alcohol consumption. The significant birth cohort effects among recent and early generations in the Shanghai population were in line with a society in socioeconomic transition and adoption of Western lifestyle mainly including consumption of calorie-rich foods and physical inactivity. Differences in these risk patterns will have implications on health care efforts and policies for cancer control., Highlights • The ASIR of pancreatic cancer in the U.S. is higher than that in urban China. • Higher risk of pancreatic cancer was observed in the youth of urban China, but this pattern was not prominent in the U.S. • The disparities of birth cohort effects are consistent with a society in socioeconomic transition.

Aim The mortality risk attributable to the classifications of chronic obstructive pulmonary disease (COPD) remains unclear. We investigated the associations of mortality with COPD classifications and reduced lung function in a large longitudinal cohort in Taiwan. Methods A total of 388,401 adults (≥25 years of age) were recruited between 1996 and 2016 underwent 834,491 medical examinations including spirometry. We used the Global Initiative for Chronic Obstructive Lung Disease (GOLD) to establish the COPD classifications. A time-dependent Cox regression model was used to investigate the associations between the morality risk and COPD classifications. We also examined the associations between mortality and lung function. Results The mean age of the participants was 42.1 years, and the median follow-up duration was 16.2 years. We identified 28,283 natural-cause deaths, and the mortality rate was 4.7 per 1,000 person-years. The hazard ratios (HRs) [95%confidence interval (95%CI)] of mortality in the participants with restrictive spirometry pattern and COPD GOLD Ⅰ–Ⅳ were 1.31 (1.27–1.35), 1.18 (1.00–1.39), 1.43 (1.35–1.51), 1.78 (1.66–1.90), and 2.13 (1.94–2.34), respectively, with reference to the participants with normal lung function. The natural-cause mortality risk increased by 33% [HR(95%CI): 1.33 (1.28–1.39)] for participants with COPD. Reduced lung function was also associated with a higher mortality risk. Conclusions A more advanced classification of COPD was associated with a greater increase in the mortality risk. Our study suggests that early detection of COPD and slowing the disease progress in patients with COPD are crucial for mortality prevention.

Background and aim We validated a modified risk algorithm based on the Asia-Pacific Colorectal Screening (APCS) score that included body mass index (BMI) for prediction of advanced neoplasia. Methods Among 5744 Chinese asymptomatic screening participants undergoing a colonoscopy in Hong Kong from 2008 to 2012, a random sample of 3829 participants acted as the derivation cohort. The odds ratios for significant risk factors identified by binary logistic regression analysis were used to build a scoring system ranging from 0 to 6, divided into "average risk" (AR): 0; "moderate risk" (MR): 1-2; and "high risk" (HR): 3-6. The other 1915 subjects formed a validation cohort, and the performance of the score was assessed. Results The prevalence of advanced neoplasia in the derivation and validation cohorts was 5.4% and 6.0%, respectively (P = 0.395). Old age, male gender, family history of colorectal cancer, smoking, and BMI were significant predictors in multivariate regression analysis. A BMI cut-off at > 23 kg/m2 had better predictive capability and lower number needed to screen than that of > 25 kg/m2 . Utilizing the score developed, 8.4%, 57.4%, and 34.2% in the validation cohort were categorized as AR, MR, and HR, respectively. The corresponding prevalence of advanced neoplasia was 3.8%, 4.3%, and 9.3%. Subjects in the HR group had 2.48-fold increased prevalence of advanced neoplasia than the AR group. The c-statistics of the modified score had better discriminatory capability than that using predictors of APCS alone (c-statistics = 0.65 vs 0.60). Conclusions Incorporating BMI into the predictors of APCS score was found to improve risk prediction of advanced neoplasia and reduce colonoscopy resources.

Arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) is an inherited myocardial disease characterized by fibro‐fatty replacement of the right ventricular myocardium, and associated with paroxysmal ventricular arrhythmias and sudden cardiac death (SCD). It is currently the second most common cause of SCD after hypertrophic cardiomyopathy in young people

Background: Despite the proven effectiveness of colorectal cancer (CRC) screening on reduction of CRC mortality, the uptake of CRC screening remains low. Participation rate is one of determinants for the success of organized population-based screening program. This review aims to identify those who are hard-to-reach, and summarize the strategies to increase their screening rate from individual, provider and system levels. Methods: A systematic search of electronic English databases was conducted on the factors and strategies of uptake in CRC screening for the hard-to-reach population up to May 2017. Discussion: The coverage rate and participation rate are two indexes to identify the hard-to-reach population in organized CRC screening program. However, the homeless, new immigrants, people with severe mental illness, the jail intimates, and people with characteristics including lower education levels and/or low socioeconomic status, living in rural/remote areas, without insurance, and racial minorities are usually recognized as hard-to-reach populations. For them, organized screening programs offer a better coverage, while novel invitation approaches for eligible individuals and multiple strategies from primary care physicians are still needed to enhance screening rates among subjects who are hard-to-reach. Suggestions implied the effectiveness of interventions at the system level, including linkages to general practice; use of decision making tools; enlisting supports from coalition; and the continuum from screening to diagnosis and treatment. Conclusion: Organized CRC screening offers a system access to approach the hard-to-reach populations. To increase their uptake, multiple and novel strategies from individual, provider and system levels should be applied. For policymakers, public healthcare providers and community stakeholders, it is a test to tailor their potential needs and increase their participation rates through continuous efforts to eliminate disparities and inequity in CRC screening service.

BACKGROUND AND AIM Colorectal cancer (CRC) incidence is rising among

Background It remains controversial whether weight change could influence the risks of colorectal cancer (CRC) and mortality. This study aimed to quantify the associations between full-spectrum changes in body mass index (BMI) and the risks of colorectal cancer (CRC) incidence, cancer-related and all-cause mortality among midlife to elder population. Methods A total of 81,388 participants who were free of cancer and aged 55 to 74 years from the Prostate, Lung, Colorectal, and Ovarian (PLCO) screening program were involved. The percentage change of BMI was calculated as (BMI in 2006 - BMI at baseline)/BMI at baseline, and was categorized into nine groups: decrease (≥ 15.0%, 10.0–14.9%, 5.0–9.9%, 2.5–4.9%), stable (decrease/increase Results After 2006, there were 241 new CRC cases, 648 cancer-related deaths, and 2361 all-cause deaths identified. Overall, the associations between BMI change and CRC incidence and cancer-related mortality, respectively, were not statistically significant. Compared with participants whose BMI were stable, individuals who had a decrease in BMI were at increased risk of all-cause mortality, and the HRs were 1.21 (95% CI: 1.03–1.42), 1.65 (95% CI: 1.44–1.89), 1.84 (95% CI: 1.56–2.17), and 2.84 (95% CI: 2.42–3.35) for 2.5–4.9%, 5.0–9.9%, 10.0–14.9%, and ≥ 15.0% decrease in BMI, respectively. An L-shaped association between BMI change and all-cause mortality was observed. Every 5% decrease in BMI was associated with a 27% increase in the risk of all-cause mortality (HR = 1.27, 95% CI: 1.22–1.31, p Conclusions A decrease in BMI more than 5% shows a significantly increased risk of all-cause mortality among older individuals; but no significant association between increase in BMI and all-cause mortality. These findings emphasize the importance of body weight management in older population, and more studies are warranted to evaluate the cause-and-effect relationship between changes in BMI and cancer incidence/mortality.

Background Risk stratification in acute myocardial infarction (AMI) is important for guiding clinical management. Current risk scores are mostly derived from clinical trials with stringent patient selection. We aimed to establish and evaluate a composite scoring system to predict short-term mortality after index episodes of AMI, independent of electrocardiography (ECG) pattern, in a large real-world cohort. Methods Using electronic health records, patients admitted to our regional teaching hospital (derivation cohort, n=2127) and an independent tertiary care center (validation cohort, n=1276) with index acute myocardial infarction between January 2013 and December 2017 as confirmed by principal diagnosis and laboratory findings, were identified retrospectively. Results Univariate logistic regression was used as the primary model to identify potential contributors to mortality. Stepwise forward likelihood ratio logistic regression revealed that neutrophil-to-lymphocyte ratio, peripheral vascular disease, age, and serum creatinine (NPAC) were significant predictors for 90-day mortality (Hosmer-Lemeshow test, P=0.21). Each component of the NPAC score was weighted by beta-coefficients in multivariate analysis. The C-statistic of the NPAC score was 0.75, which was higher than the conventional Charlson's score (C-statistic=0.63). Application of a deep learning model to our dataset improved the accuracy of classification with a C-statistic of 0.81. Multivariate binary logistic regression Variable β Adjusted Odds ratio (95% CI) P-value Points Age ≥65 years 1.304 3.68 (2.63–5.17) NPAC deep learning model Conclusions The NPAC score comprised of four items from routine laboratory parameters and basic clinical information and can facilitate early identification of cases at risk of short-term mortality following index myocardial infarction. Deep learning model can serve as a gate-keeper to provide more accurate prediction to facilitate clinical decision making.