Comparison of Semaglutide and Lifestyle Counselling for Weight Loss Using Multi-Site Electronic Health Records.

To evaluate the effectiveness of semaglutide compared with lifestyle counselling alone for weight loss in diabetic and non-diabetic patients with obesity. This multi-site, retrospective, observational study uses data from electronic health records which are part of the Greater Plains Collaborative (GPC) in a time-to-event analysis for comparative effectiveness. Participants were adults with obesity receiving semaglutide for a minimum of 16 weeks or lifestyle counselling with at least three sessions within the first 16 weeks. The primary outcome is incidence of 10% or greater reduction in weight from baseline. Of 3927 eligible participants, 615 were prescribed semaglutide and 3312 received lifestyle counselling. Following propensity score matching, each group (diabetic and non-diabetic) consisted of 120 and 495 participants, respectively. Hazard ratios for 10% weight loss were significantly higher from semaglutide for non-diabetic (1.63 [95% CI: 1.32, 2.01; p < 0.001]) and diabetic (2.45 [95% CI: 1.47, 4.09; p < 0.001]) populations. These data from our study suggest that semaglutide therapy compared with lifestyle counselling alone is more effective in achieving at least 10% weight loss. This information may be used to inform clinical practice guidelines and stimulate future research on the long-term effectiveness of various weight loss options for individuals with obesity.