Epidemiology of Cerebrovascular Disease in an Urban Community of Beijing, People's Republic of China

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Abstract
A door-to-door survey was carried out in a well-defined population of Beijing to determine the prevalence and incidence of cerebrovascular disease (CVD) among 10,941 individuals. The survey included a complete census, together with a pretested interview and a brief screening examination with a high level of sensitivity for detecting individuals with CVD. All those with responses or findings suggestive of CVD were requested to be examined by a neurologist using defined clinical criteria to establish a diagnosis. There was 100% cooperation with the screening and diagnostic phases of the survey. Based on 130 prevalent cases of completed stroke, the crude and age-adjusted (to the 1960 total US population) point prevalence ratios (per 100,000) are 1,188 and 1,285, respectively. Of these, there were 36 new incidence cases of first completed stroke, yielding crude and age-adjusted incidence rates (per 100,000) of 329 and 370, respectively. The age-specific prevalence ratios and incidence rates of completed stroke rise with age. The majority of completed strokes are clinically diagnosed as cerebral infarction. In summary, CVD represents a major cause of morbidity in this population, with rates among the highest of any area of the world where this disease has been studied.

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