This non-interventional longitudinal study is a follow-up of the Austrian Cholesterol Screening and Treatment project (ACT I), which assessed the cholesterol status, including achievement of the target levels applicable at that time (LDL levels <100 mg/dL), in participants with coronary heart disease (CHD) already being treated with a statin. In this study, participants without adequate LDL-cholesterol reduction with a statin underwent extension of therapy with ezetimibe with the goal of achieving target levels.