West of Scotland Coronary Prevention Study

The West of Scotland Coronary Prevention Study (also known as WOSCOPS) was a landmark randomized controlled trial, published in 1995, that investigated the effects of pravastatin, a cholesterol-lowering drug, on primary prevention of coronary heart disease (CHD) in men with hypercholesterolemia. Conducted in the early 1990s, this study provided critical evidence on the benefits of statins in reducing cardiovascular events in individuals without a history of CHD. It concluded that statin treatment reduced CHD events by 31% after nearly five years of treatment.

Source: Wikipedia — West of Scotland Coronary Prevention Study (CC BY-SA 4.0)