National and subnational trends of years of life lost and reduced life expectancy caused by bladder cancer in China from 2005 to 2020.

BACKGROUND: Bladder cancer was commonly diagnosed cancer, which has a high disease burden in China and the world. This study aims to better assess the epidemiological situation of bladder cancer in China. METHODS: Data for bladder cancer mortality were observed based on the data from the National Mortality Surveillance System. We analyzed the number of deaths, years of life lost(YLL), the age-standardized mortality rates(ASMR) and the age-standardized YLL rates due to bladder cancer in China during 2005-2020. We calculated the reduction in life expectancy due to bladder cancer. RESULTS: In 2020, bladder cancer accounted for 29 730 deaths and 492 859 YLL in China. The ASMR and the age-standardized YLL rate of males were consistently higher than that of females. From 2005 to 2020, the reduction in life expectancy due to bladder cancer increased from 0.018 to 0.021 years. The reduction in life expectancy caused by bladder cancer in urban areas was consistently higher than that in rural areas, since this increased from 0.013 years in 2005 to 0.018 years in 2020 in rural areas. The reduction in life expectancy caused by bladder cancer in males was higher than that in females, and increased from 0.024 to 0.029 years in males between 2005 and 2020. CONCLUSIONS: The number of deaths for bladder cancer in China has been increasing in recent years. Although the loss of life expectancy caused by bladder cancer in China was relatively small, the gradually increasing trend warrants attention, especially in economically developed regions.