Does the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program bariatric risk/benefit calculator hold its weight? An assessment of its accuracy

•The calculator predictions for comorbidity resolution were acceptable except for obstructive sleep apnea.•The discrimination of the calculator for 30-day reoperation and reintervention risks was accurate.•On average, the calculator BMI predictions deviated from the observed 1-year BMI by 3.24 kg/m2.•One-year BMI predictions were less accurate for RYGB patients and those with very high preoperative BMI.