Efficacy of an intensive prevention program in coronary patients in primary care, a randomised clinical trial

Background Most studies that have analysed the effect of secondary prevention of coronary heart disease come from hospitals. Those that are community-based have been conducted mainly by nurses and follow-up was generally too short to show impact on cardiovascular events. Methods This is a multi-centre randomised controlled clinical trial in which patients in the intervention group received periodic postal reminders to see their general practitioner every three months during a 3-year follow-up. General practitioners reinforced healthy lifestyle recommendations to patients and reviewed drug therapies at these quarterly intervals. Patients in the control group received usual care. Results A total of 983 patients aged 30–79 were included. During the 3-year follow-up, 67 patients died and 156 experienced a non-fatal cardiovascular event. The event rates and all-cause mortality were similar in the intervention and control groups (24.0% and 23.5%, and 8.1% and 9.9%, respectively). Improvement in quality of life was similar in both groups. Blood pressure and high-density lipoprotein cholesterol were more frequently within recommended levels in the intervention group than in controls: odds ratio 1.63, 95% confidence interval 1.05–2.51, and odds ratio 2.61, 95% confidence interval 1.32–5.18, respectively. Conclusions Intensive secondary prevention conducted by general practitioners may improve long-term blood pressure control and increase high-density lipoprotein cholesterol in patients with stable coronary disease.