INS and diabetes mellitus: Recurrence was associated with diabetes duration (hazard ratio (HR) 1.04, (1.02–1.07), p = 0.001), baseline HbA1c (HR 1.14, (1.11–1.25), p = 0.002), insulin treatment (HR 2.35, (1.38–4.0), p < 0.0001), weight regain (HR 1.01, (1.01–1.02), p = 0.03) and type of BS (HR 0.48 (0.29–0.82), p = 0.007 for MAs and HR 1.56 (1.13–2.16), p = 0.006 for SG, using GBP as reference).