Table 5.
Risk-adjusted Outcomes Per Hour of OT
| Outcome | OR (95% Confidence Interval) | P |
|---|---|---|
| eLOS (≥5 d) | 1.585 (1.443–1.766) | <0.001 |
| UR ( | 1.0867 (0.975–1.202) | <0.001 |
| Overall complication | 1.192 (1.120–1.272) | <0.001 |
| Flap-site complication | 1.187 (1.108–1.273) | <0.001 |
| Breast wound | 1.0879 (1.002–1.178) | <0.0001 |
| Flap compromise | 1.101 (0.970–1.236) | <0.001 |
| Flap loss | 1.091 (0.8597–1.3256) | <0.001 |
| Breast fat necrosis | 1.146 (1.146–1.250) | <0.001 |
| Donor-site complication | 1.117 (1.047–1.192) | <0.001 |
| Abdominal wound | 1.112 (1.030–1.199) | <0.001 |
| Abdominal fat necrosis | 1.069 (0.928–1.213) | <0.001 |
| Medical complication | 1.150 (1.008–1.300) | <0.001 |
| Pulmonary embolism | 1.143 (0.8993–1.3941) | <0.001 |
| Blood transfusion | 1.149 (1.007–1.297) | <0.001 |
After risk-adjustment with demographic, intraoperative, and perforator covariates, the risk of morbidity, donor-site complication, medical complication, blood transfusion, fat necrosis, wound, UR, and eLOS significantly increase per hour of operation. Multivariate logistic regressions controlling for demographics, comorbidities, and surgical factors were conducted.