Effects of Collaboration Care Model on the Quality of Life in Patients after Coronary Angioplasty: A Randomized Controlled Clinical Trial.

The study used convenience sampling from one hospital, and each group had only 25 patients, so the result may not apply to other settings or patient groups. Follow-up was only three months, so it does not show whether quality-of-life gains persisted. The intervention included physician and nurse education, patient agreement on diet, medication and activity, and follow-up calls, so the contribution of any single component cannot be separated. Patients with acute cardiovascular disease, diabetes, hormone disorders, renal disease or mental disease were excluded, so it says little about common comorbid groups. The paper does not report allocation concealment, outcome-assessor blinding, or how dropouts were handled.

Do not conclude that the collaboration care model alone caused the quality-of-life improvement. The program combined physician and nurse education, patient agreement on diet, medication and exercise, and follow-up calls, so the contribution of any single component cannot be separated.