Objective To systematically review the incidence, mortality and disease burden of colorectal cancer (CRC) in China. Methods The CNKI, WanFang Data, VIP, CBM, PubMed, Embase and Web of Science databases were searched to collect cohort studies about the incidence, mortality and disease burden of CRC in China from the establishment of the database to July 2024. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies. Then, meta-analysis was performed by using Stata 18.0 software. Results A total of fifty-six studies were included. The result of meta-analysis showed the overall incidence of CRC in China was 31‰ (95%CI 29‰ to 33‰), and the incidence of male was 35‰ (95%CI 32‰ to 37‰). The female incidence was 27‰ (95%CI 25‰ to 29‰). The overall mortality of CRC in China was 20‰ (95%CI 17‰ to 22‰), of which the male mortality was 22‰ (95%CI 19‰ to 25‰), and the female mortality was 18‰ (95%CI 15‰ to 20‰). Conclusion The incidence and mortality rates of CRC in China are high, resulting in a significant disease burden that varies regionally. The incidence and mortality of males are significantly higher than those of females. Intervention measures should be taken to reduce the disease burden of CRC in China according to the related risk factors of CRC.
Objective To systematically review the incidence, mortality and disease burden of stroke in China. Methods The CNKI, WanFang Data, VIP, CBM, PubMed, Embase, Web of Science and Cochrane Library databases were electronically searched to collect cohort studies on stroke epidemiology and disease burden from inception to June 30, 2024. Two reviewers independently screened the literature, extracted data, and assessed the risk of bias of the included studies. Meta-analysis was then performed using Stata 18.0 software. Results A total of 49 studies were included, and the results showed that the overall incidence of stroke in China was 430/100 000 (95%CI 370/100 000 to 490/100 000); The incidence of stroke in men was 510/100 000 (95%CI 450/100 000 to 580/100 000); The incidence of stroke in women was 370/100 000 (95%CI 320/100 000 to 410/100 000). The overall mortality rate of stroke in China was 220/100 000 (95%CI 160/100 000 to 280/100 000); Stroke mortality in men was 160/100 000 (95%CI 120/100 000 to 190/100 000); Stroke mortality in women was 130/100 000 (95%CI 100/100 000 to 160/100 000). The average standard DALY rate of stroke in China was 2 238.09/100 000, and men (3 510.53/100 000) was higher than that of women (2 083.39/100 000). Conclusion The risk of stroke in men in China is significantly higher than that in women, which is mainly attributed to the higher rate of smoking and drinking alcohol, poor eating habits and the neglect of health management. Moreover, interregional differences in aging, especially the higher aging levels in the eastern and northern regions, also had a significant impact on stroke incidence in these regions.