Objective To estimate the frequency of various risk factors for overall stroke and to identify risk factors for cerebral infarction （CI） versus intracerebral hemorrhage （ICH） in a large hospital-based stroke registry. Methods Data from a total of 3901 patients

consisting of 3525 patients with CI and 376 patients with ICH were pros-pectively coded and entered into a computerized data bank. Results Hypertension and smoking were the most prominent factors affecting overall stroke followed by mild internal carotid artery stenosis （< 50%）

hypercholesterolemia

transient ischemic attacks （TIAs）

diabetes mellitus

and cardiac ischemia. Univariate analysis showed that factors in male significantly associated with CI versus ICH were old age

a family history of stroke

and intermittent claudication; whereas in female the factors were oral contraception and migraine. By multivariate analysis

in all patients

the factors significantly associated with CI as opposed to ICH were smoking

hyperch-olesterolemia

migraine

TIAs

atrial fibrillation

structural heart disease

and arterial disease. Hypertension was the only significant factor related with ICH versus CI.Conclusions The factors for ischemic and hemorrhagic stroke are not exactly the same. Cardiac and arterial disease are the most powerful factors associated with CI rather than ICH.