Variables Diabetes Surgery Score
  0 1 2 3
Age ≥40 <40    
BMI <30 30-39 40-49 >50
C-peptide (ng/mL) 0.9-1.9 2.0-3.9 4-6 >6
Duration of diabetes >10 5-10 2-4.9 <2
RYGB: Roux-en-Y gastric bypass; BMI: body mass index
Table 3: Diabetes Surgery Score (RYGB) [43]