Fig. 3

RCS curve of BMI and TWL% outcome in model 2. The y axis shows odds ratios (ORs) of preoperative BMI associated with optimal clinical response with the shaded area representing 95%CIs (nonlinear trend, P   =  0.005). Model was adjusted for potential confounders (age, surgical method, T2DM, and hyperuricemia). BMI: body mass index; T2DM: type 2 diabetes mellitus; TWL%: percentage of total weight loss; MBS: Metabolic and Bariatric Surgery: RCS: restricted cubic spline