Abstract: ObjectiveTo describe risk factors of stroke and the relationship between cerebral hemodynamic index(CVHI)abnormality and stroke risk among urban community residents aged ≥50 years in Shanghai and to provide references for stroke intervention.MethodsA questionnaire survey,physical examination and CVHI measurement were conducted among 2 031 residents at the age of 50 years or older selected with cluster sampling from Changbai and Wujiaochang communities of urban Shanghai.ResultsAmong the participants,the prevalence rates for conventional risk factors of stroke were 51.1% for hypertension,30.3% for cardiovascular disease,18.2% for diabetes mellitus,21.6% for hyperlipidemia,26.9% for familial stroke history,46.3% for overweight or obesity,11.6% for smoking,and 8.0% for alcohol consumption,respectively.There were 42.0% of the participants were at a high risk of stroke(with the integral CVHI score of<75)and the percentage of the individuals with the CVHI score of<75 increased significantly with the increment of age among the participants(P<0.01).ConclusionThe prevalence of stroke risk factors is at a high level and the number of persons at a higher stoke risk increases with the increment of age among urban community residents at their age of 50s and over in Shanghai.