[Screening of high-risk population susceptible to stroke and their characteristics].
High-risk population susceptible to stroke were screened with self-designed scoring method for quantitatively evaluating the risk of stroke in 550,000 frame population in 22 areas with different incidence of stroke during 1990-1993 and its related factors were analyzed by a principal component analysis method. Results showed scoring value correlated positively with probabilities of stroke, which suggested its objectivity and feasibility. The first principal component correlated positively with age, blood pressure, blood sugar, blood cholesterol, body mass index, ect., which reflected the characteristics of high risk population susceptible to stroke, and 71.43% of those with stroke were in the first principal component class. The proportion of the population with the first principal component correlated positively with the incidence of stroke in the area, therefore, stroke prevention should be focused on such population.