[A descriptive epidemiologic study of cerebrovascular disease (CVD) in the five provinces in northwest China]

In the five provinces of Northwest China. the population studied from random sampling was 693,190. The crude incidence rate of CVD was 88.2/100,000, the crude prevalence rate 195.6/100,000, and the crude mortality rate 74.4/100,000. The epidemic levels of CVD in Ning-Xia and Shan-Xi were the highest, Its epidemic levels in the urban areas were higher than those in the rural areas. The prevalence rate of CVD was highest in October. The epidemiologic study suggested that the epidemic levels of CVD in North west China was moderate only in comparison with similar studies carried out in some other parts of China.