北京、西安和上海地区帕金森病的流行病学调查

A cross-sectional prevalence study of Parkinson's disease in China was under taken in 1997-98. We assessed 29454 residents aged ≥55 years from 79 rural and 58 urbancommunities in Beijing, Xi'an, and Shanghai, who were selected through stratified, multistage, cluster sampling.With a standardised diagnostic protoco l, we identified 277 people with the disease. Prevalence of Parkinson's disease for those aged ≥65 years was 1.7%(95%CI 1.5-1.9). We estimate that 1.7 million people in China have the disease (aged ≥55 years). Our findings suggest that prevalence of Parkinson's disease in Ch ina is similar to that in developed countries.