5x-Multiplier vs 3-Tier Model for Discharge Opioid Prescriptions After Intra-abdominal Cancer Surgery: A Randomized Clinical Trial

Primary Objectives: The co-primary objectives of this study are as follows: 1\. To determine differences in the initial OME prescribed upon discharge between each algorithm/model. 1\. To determine OME usage by day 14 after hospital discharge. Secondary Objectives: Secondary objectives are as follows: 1. To determine rates of patients with zero OME upon discharge. 2. To determine rates of OME refill requests and completions at 15- and 30-days post-operation. 3. To determine number of unused or leftover pills at 15- and 30-days post- operation 4. To determine persistent opioid use at 30-days, 3-months, and 6-months post-operation 5. To elucidate patient, prescriber, and oncologic factors predictive of persistent opioid use 6. To assess quality of life using patient-reported outcomes at 30-days, 3-months, and 6-months post-operation. 7. To determine patient satisfaction with either prescribing model.