ABSTRACT
Subarachnoid Hemorrhage [SAH] accounts for 5% of all strokes, Risk factors for SAH include hypertension, Cigarette smoking, alcohol and oral contraceptive pills [OCPs]. In this study the risk factors of SAH in West Azerbaijan Province, Iran were evaluated. This case-control study carried out from March 2002 to March 2006 at Motahari Hospital of Urmia University. Using saved data of the patients of the hospital, 375 patients [exposed group] compared with 750 non exposed cases [Control]. All of the risk factors evaluated in two groups, then were analyzed using the SPSS software. Data processing accomplished by the Chi-square test. Odd Ratios evaluated for all of the risk factors. Logistic regression model was used to find out the interaction of risk factors for SAH. Of patients, 60% were women. SAH most frequently occured between 40 to 60 years old. The Odd Ratios of cigarette smoking was 3.46, of hypertension 3.59, of alcohol use 2.69, and of oral contraceptive pills 2.19; So SAH had a relationship with these factors. The Results of this study were similar to other studies of this type. The important point of this study was the ability of controlling each of the risk factors which led to the decrease of prevalence of SAH in the Community