Are cancer-related decision aids effective? A systematic review and meta-analysis

Journal of Clinical Oncology : Official Journal of the American Society of Clinical Oncology
Mary Ann O'BrienWenjie Cai

Abstract

Decision aids (DAs) have been developed to improve communication between health professionals and patients, and to involve patients in decisions about their health care. Cancer-related decisions can be difficult due to problems in communicating complex information about prognosis and the modest benefits of available treatments. We conducted a systematic review of cancer-related DAs. Randomized controlled trials (RCTs) of cancer-related DAs about screening, prevention, and treatment decision making were included. We completed a comprehensive literature search and conducted both qualitative and quantitative analyses. We also conducted a meta regression to explore heterogeneity of effect estimates. We identified 34 RCTs of DAs in a screening (n = 22 trials) or preventive/treatment (n = 12 trials) context. DAs significantly improved knowledge about screening options when compared to usual practice (weighted average effect size, 0.50; 95% CI, 0.27 to 0.73; P < .0001). A similar effect on knowledge was also found for preventive/treatment options (weighted average effect size, 0.50; 95% CI, 0.31 to 0.70; P < .0001). Overall, general anxiety was not increased in most trials and was significantly reduced in a screening context. Decision...Continue Reading

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