Validation and improvement of a highly predictive bariatric surgery mortality risk calculator to include sleeve gastrectomy using MBSAQIP 2015–2017 data

Background Initial development of a prominent bariatric surgery mortality risk calculator comprising cases that now account for <10% of commonly performed operations. Whether the previously highly predictive model is valid with more recent data is unknown. Objectives To validate and improve a bariatric-surgery-specific mortality calculator with updated case mix and outcomes data. Setting Metabolic and Bariatric Surgery Accreditation and Quality...