Hussien DG, Villarreal JV, Panchbhavi V, et al. - This research was attempted to assess the effect of a range of demographic factors on unique surgical complications within the 30-day postoperative period. Data were extracted from the American College of Surgeons National Surgical Quality Improvement Program database from 2012 to 2017 and searched for Achilles tendon repairs using CPT codes 27650, 27652, and 27654, identifying 4,040 patients. The t-tests or chi-squared tests were applied to examine 22 demographic variables and their association with each of 4 complications. The independent risk factors were ascertained by performing a logistic regression for each outcome, based on outcomes from the bivariate analyses. This research offers providers a more complete picture of which preoperative characteristics influence Achilles tendon repair patients, directing management to decrease postoperative complication rates.