RESUMEN
Point prevalence rate of complete stroke on December 31, 1986 in China was investigated using a retrospecive section study for 5 814 851 people of 29 provinces and cities (excluding Taiwan province), and 14275 stroke cases were found. Point prevalence rate was 245.49 per 100000 people with 95% CI (confidence interval) 241.57-249.61 per 100000 people. The rate standardized by the constituent ratio of population between city and rural area of China in 1986 was 247.66 per 100000 people. The rate age-standardized by the population of China in 1982 accounted for 191.92 per 100000 and the rate agestandardized by the world standard population was 259.86 per 100000 people.It has also been found that there was a tendency for the prevalence rates to increase gradually from south to north and to decrease progressively from east to west. The linear regression models have been fitted between the point prevalence rates and latitude or longitude respectively. The results were Y= 12.3819?-1107.38 (tb = 4.65 df = 5 P = 0.0056) for longitudes and Y = 12.6279?-146.6266 (tb = 11.7517 df = 4 P = 0.0003) for latitudes. There was a difference statistically among various topographic areas. The prevalence rate was much higher in urban areas than rural areas and much higher in men than in women. The prevalence rate increased with age and their relationships have been fitted well with the logistic curve.
RESUMEN
A large-scale population survey has been made to clarify the degree of harm and feature of distribution of cerebrovascular disease (CVD) in China. The sample investigated was 5814851 from about a billion people in 29 provinces, municipal cities and autonomous regions except Taiwan in China. The incidence, prevalence and mortality rates have been standardized by the direct method using the world standard population. It has been found that the incidence rate of CVD in China was 109.95 per 100 000 people in 1986 and its 95%CI (confidence interval) was 107. 25 ~ 112. 65 per 100000. The age-standardized incidence rate was 115.87/100000. The point prevalence rate of CVD in China was 245.49 per 100000 people on December 31, 1986 and its 95%CI was 241.57-249.61 per 100000, with an age-standardized prevalence rate of 259.86 per 100000. The mortality rate of CVD was 76.78 per 100000 in 1986 and its 95%CI 74.52~79.04 per 100000, with an age-standardized mortality rate of 80.94 per 100000. It has also been found that there was a tendency for the rates to increase gradually from south to north and to decrease progressively from east to west. The models of linear regression have been established between latitude and rates as well as between longitude and rates, respectively. The incidence, prevalence and mortality rates of CVD differ significantly in various topographic areas. They were much higher in cities than in rural areas, and much higher in men than in women. The incidence, prevalence and mortality rates increased with the age, and their relationships were fitted with logistic curve, respectively.