Multimorbidity and risk among patients with established cardiovascular disease: a cohort study

Background Most patients managed in primary care have more than one condition. Multimorbidity presents challenges for the patient and the clinician, not only in terms of the process of care, but also in terms of management and risk assessment. Aim To examine the effect of the presence of chronic kidney disease and diabetes on mortality and morbidity among patients with established cardiovascular disease. Design of study Retrospective cohort study. Setting Random selection of 35 general practices in the west of Ireland. Method A practice-based sample of 1609 patients with established cardiovascular disease was generated in 2000-2001 and followed for 5 years. The primary endpoint was death from any cause and the secondary endpoint was a cardiovascular composite endpoint that included death from a cardiovascular cause or any of the following cardiovascular events: myocardial infarction, heart failure, peripheral vascular disease, or stroke. Results Risk of death from any cause was significantly increased in patients with increased multimorbidity (P