Postoperative Opioid Use Prediction Calculator Performance in Patients Undergoing Gynecologic Surgery

This prognostic study of patients who underwent major gynecologic surgery found that the original calculator showed moderate threshold-specific discrimination but overpredicted opioid use at the higher thresholds of pill use. The updated model showed moderate discrimination after internal validation, with calibration intercepts near 0 and slopes ranging from 0.93 to 1.15. External institutional validation is needed. Individualized estimates may support opioid stewardship.

Corresponding Author: Stephanie L. Lim, MD, Department of Obstetrics and Gynecology, Duke University, 200 Trent Dr, Durham, NC 27710 (stephanie.l.lim@duke.edu).

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