Cost-Effectiveness of Cardiac Rehabilitation in Older Adults With Coronary Heart Disease.

Purpose: While cardiac rehabilitation (CR) is recommended and effective following acute cardiac events, it remains underutilized, particularly in older adults. A study of 601 099 Medicare beneficiaries ≥65 yr hospitalized for coronary heart disease compared 5-yr mortality in users and nonusers of CR. Using instrumental variables (IV), CR improved mortality by 8.