Retrospective comparative study of the effectiveness of bariatric surgery on 3-year outcomes in the real-world clinical setting

•This study includes 61,313 patients across many institutions in the US.•The median BMI loss three years after surgery was 28.7% (Inter-quartile range (IQR): 20.8%-36.2%) and 20.5% (IQR:13.5%-28.6%) for RYGB and SG groups, respectively.•At three years post-operatively, HbA1c decreased by 13% for RYGB and 5.9% for the SG group.•The probabilities of remission from diabetes, hypertension, and low HDL cholesterol were significantly higher among patients who had surgery compared to the CG.•No differences were see between the two procedures in terms of remission from diabetes, hypertension, or hyperlipidemia.