Table 4.
Observed complications rate in RR ≤ 1 and RR > 1
| Observed complications | Complication rate in RR ≤ 1 | Complication rate in RR > 1 | p (Fisher exact test) |
|---|---|---|---|
| Serious complication | 15.6% (21/135) | 35.7% (65/182) | <0.001 |
| Any complication | 27.6% (37/134) | 49.2% (90/183) | <0.001 |
| Pneumonia | 5.2% (8/153) | 20.1% (33/164) | <0.001 |
| Cardiac complication | 4.6% (8/175) | 18.3% (26/142) | <0.001 |
| SSI | 15.9% (32/201) | 18.1% (21/116) | 0.641 |
| Renal failure | 1.9% (4/209) | 16.7% (18/108) | <0.001 |
| Return to OR | 5.2% (8/153) | 9.1% (15/164) | 0.200 |
| Death | 2.3% (4/176) | 17.7% (25/141) | <0.001 |
| Discharge to nursing or rehab facility | 1.5% (2/137) | 23.9% (43/180) | <0.001 |
RR risk ratio, SSI surgical site infection