Early remission (partial + complete) was defined by reaching diabetes-free status during the first two months after surgery and late remission (partial + complete) was defined by reaching diabetes-free status more than two months after surgery. In univariate analysis for early remission, there were 26 variables with p-value < 0·10 (14 with p-values < 0·05). In univariate analysis for late remission, there were 33 variables with p-value < 0·10 (17 with p-values < 0·05). Individual variables were added until the models below were developed. (% EWL: percent excess body weight loss).