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Aim: To determine the associations between the Chinese visceral adiposity index (CVAI) and the risks of all‐cause and cause‐specific mortality. Materials and Methods: A total of 3 916 214 Chinese adults were enrolled in a nationwide population cohort covering all 31 provinces of mainland China. The CVAI was calculated based on age, body mass index, waist circumference, and triglyceride and high‐density lipoprotein cholesterol concentrations. We used a Cox proportional hazards regression model to determine the hazard ratios and 95% confidence intervals (CIs) for risk of mortality associated with different CVAI levels. Results: The median follow‐up duration was 3.8 years. A total of 86 158 deaths (34 867 cardiovascular disease [CVD] deaths, 29 884 cancer deaths, and 21 407 deaths due to other causes) were identified. In general, after adjusting for potential confounding factors, a U‐shaped relationship between CVAI and all‐cause mortality was observed by restricted cubic spline (RCS). Compared with participants in CVAI quartile 1, those in CVAI quartile 4 had a 23.0% (95% CI 20.0%–25.0%) lower risk of cancer death, but a 23.0% (95% CI 19.0–27.0) higher risk of CVD death. In subgroup analysis, a J‐shaped and inverted U‐shaped relationship for all‐cause mortality and cancer mortality was observed in the group aged < 60 years. Conclusions: The CVAI, an accessible indicator reflecting visceral obesity among Chinese adults, has predictive value for all‐cause, CVD, and cancer mortality risks. Moreover, the CVAI carries significance in the field of health economics and secondary prevention. In the future, it could be used for early screening purposes. [ABSTRACT FROM AUTHOR]

Abstract Objectives China is undergoing a rapid aging transition. The trends in age-specific mortality rates from colorectal cancer remain unknown, and a number of studies have not distinguished the age, period, and cohort effects simultaneously. Study design A descriptive study was implemented with a joinpoint regression analysis and age–period–cohort (APC) model based on the intrinsic estimator (IE). Methods Age-specific mortality rates of colorectal cancer (1987–2016) were collected by gender (men/women) and region (urban/rural). The average annual percentage change (AAPC) and relative risks in the trend were identified using joinpoint Poisson regression and APC model (IE), respectively. Results Joinpoint regression analysis revealed that the rates decreased in the younger (men aged <45 years and women aged <75 years) but increased in the older (men aged >75 years and women aged >80 years) age groups. The APC model (IE) showed that the rates increased with age and time period but decreased with birth cohorts. But from 2000 to 2005, the period effects showed a substantial decline among urban residents. From the 1910–1914 to the 1915–1919 birth cohort, mortality increased among men, and from the 1925–1929 to the 1930–1934 birth cohort, mortality increased among rural residents. Conclusions The trends in colorectal cancer mortality are different between age groups. The younger age groups show a decreasing trend, whereas the older age groups an increasing trend. Cost-effective prevention and control should be implemented more in the elderly and for older cohorts at high risk. Highlights • Through the joinpoint Poisson regression, colorectal cancer mortality decreased in the younger (men aged <45 years and women aged <75 years) but increased in the older (men aged >75 years and women aged >80 years) over the last 30 years. • Through the age–period–cohort model (intrinsic estimator), the rates increased with age and time period but decreased with birth cohorts. • Analysis based on age-specific mortality rates reveals more information than that based on age-standardized rate. [ABSTRACT FROM AUTHOR]