Patient demographics, comorbidities, and weight loss were extracted from electronic health records of patients who underwent LRYGB (n = 270) or LSG (n = 74) from January 2010 through March 2014 at a single institution. Variables hypothesized to be associated with surgery type were included in a multivariable model to generate a propensity score for each patient. Propensity score–adjusted multivariable odds ratios (ORs) for characteristics associated with EBWL >50% were calculated.
Overall 90-d complication rates were similar between the LRYGB and LSG cohorts. LRYGB patients had more frequent emergency department visits (27.1% versus 14.1%; P = 0.029) but similar rates of readmission (12.3% versus 8.5%; P = 0.53). Female sex, presence of gastroesophageal reflux disease, and surgeon age ≥40 were associated with a greater likelihood of undergoing LRYGB. On propensity score–adjusted multivariable analysis, lower body mass index (OR 3.00 [95% confidence interval (CI) 1.66–5.40]), absence of type 2 diabetes (OR 2.55 [95% CI 1.43–4.54]), and undergoing LRYGB (OR 5.29 [95% CI 2.52–11.09]) were associated with EBWL >50%.
Sleeve gastrectomy patients had similar rates of complications compared with gastric bypass patients. Lower body mass index and absence of type 2 diabetes were associated with optimal weight loss. Incorporating these findings into preoperative discussions may help patients set reasonable postoperative goals.