The calculator tool uses a set of surgical risk models presented herein has been generated from University of Pennsylvania Health System data over a contiguous 7-year timeframe from 2007-2016. The data set includes more than 78,000 patients with relevant health data including comorbidities, preoperative surgical data, and longitudinal postoperative outcomes. Regression models have been developed predicting surgically treated incisional hernia that occurred within our health system.