Oral contraceptives and mortality from circulatory system diseases: An epidemiologic study in Taiwan

Abstract
An epidemiological study on the association between oral contraceptive (OC) use [Ovulen-21, Norinyl Fe-28, Ovral-28] and circulatory system disease (CSD [cerebral hemorrhage, thrombosis or embolism and cardiovascular disease]) mortality undertaken in Taiwan by proxy interview of closest family members of 306 deceased cases, 305 deceased controls, and 611 healthy neighborhood controls indicated that the relative risk between the cases and healthy controls was 0.98 (0.62-1.54) and that between cases and healthy controls was 0.82 (0.56-1.21). Use of OC by Taiwanese women has not produced any significant adverse effects on CSD mortality.