Table 5. A pre-operative diabetes remission (DiaRem) score predicting the probability of diabetes remission after RYGB surgery.

Our analysis identified two variables that were associated with remission (partial or complete) of diabetes in all T2D patients irrespective of insulin use (i.e., age and pre-operative HbA1c). In addition, antidiabetic medication was significantly associated with early as well as late remission in the non-insulin T2D group of patients (i.e., use of ISA+Sulf). These 3 variables and treatment with Insulin were used to develop the DiaRem score based on a weighting system for each variable (Table 4). The DiaRem prediction score has a range of 0–22 and was stratified into 5 groups: 0–2 (highest probability), 3–7, 8–12, 13–17, 18–22 (lowest probability). ISA: insulin sensitizing agent other than metformin.

Prediction factor		Score
Age (years)	If age < 40, enter 0 → If age 40–49, enter 1 → If age 50–59, enter 2 → If age 60+, enter 3 →
HbA1c (%)	If HbA1c < 6.5, enter 0 → If HbA1c 6.5–6.9, enter 2 → If HbA1c 7.0–8.9, enter 4 → If HbA1c 9.0+, enter 6 →
Other diabetes medications	If not using sulfonylureas or not using ISA, enter 0 → If on sulfonylureas and ISA, enter 3 →
Treatment with Insulin	If not using insulin, enter 0 →
	If using insulin, enter 10 →
DiaRem Score (sum of individual components) →