LAUSR

BACKGROUND The increase in elective surgeries and varied postoperative patient outcomes has boosted the use of patient decision support interventions (PDSIs). However, evidence on the effectiveness of PDSIs is not updated. This systematic review aims to summarize the effects of PDSIs for surgical candidates considering elective surgeries and to identify their moderators with an emphasis on the type of targeted surgery. DESIGN Systematic review and meta-analysis. METHODS We searched eight electronic databases for randomized controlled trials evaluating PDSIs among elective surgical candidates. We documented the effects on invasive treatment choice, decision-making related outcomes, patient-reported outcomes, and healthcare resource use. The Cochrane Risk of Bias Tool version 2 and Grading of Recommendations, Assessment, Development and Evaluations were adopted to rate the risk of bias of individual trials and certainty of evidence, respectively. STATA 16 software was used to conduct the meta-analysis. RESULTS Fifty-eight trials comprising 14 981 adults from 11 countries were included. Overall, PDSIs had no effect on invasive treatment choice (risk ratio [RR], 0.97, 95% confidence interval [CI] 0.30, 1.04), consultation time (mean difference, 0.04 minutes; 95% CI -0.17, 0.24), or patient-reported outcomes, but had a beneficial effect on decisional conflict (g, -0.29; 95% CI -0.41, -0.16), disease and treatment knowledge (Hedges' g [g], 0.32, 95% CI 0.15, 0.49), decision-making preparedness (g, 0.22; 95% CI 0.09, 0.34), and decision quality (RR, 1.64; 95% CI 1.04, 2.59). Treatment choice varied with surgery type and self-guided PDSIs had a greater effect on disease and treatment knowledge enhancement than clinician-delivered PDSIs. CONCLUSIONS This review has demonstrated that PDSIs targeting individuals considering elective surgeries had benefited their decision-making by reducing decisional conflict and increasing disease and treatment knowledge, decision-making preparedness, and decision quality. These findings may be used to guide the development and evaluation of new PDSIs for elective surgical care.