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Predictability of beneficial effects in cardiac rehabilitation: a randomized clinical trial of psychosocial variables
Erdman RA, Duivenvoorden HJ, Verhage F, Kazmier M, Hugenholtz PG
Journal of Cardiopulmonary Rehabilitation 1986 Jun;6(6):206-210,212-213
clinical trial
3/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

The effects of a cardiac rehabilitation program on psychologic functioning, resumption of work, habitual exercise, and smoking habits were studied over a period of five years. In 1977, 80 post-myocardial infarction (MI) patients were randomly allocated to either a six-month systematic rehabilitation program (Rehab) or to individual home rehabilitation (Home). The two groups were tested at intake, after six months, and after five years. Habitual exercise was improved in theRehab group, but psychologic outcome either after six months or after five years was similar in both groups. Patients who smoked at intake, did not exercise habitually, and had strong feelings of disability or a low level of social inhibition showed predictable benefit from Rehab. Home patients exhibited beneficial effects five years later if at intake they did not exercise habitually and were socially inhibited. Thus, referral to Rehab after MI is indicated only for specific psychosocial dysfunction.
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