Bivariate analysis of postoperative and postdischarge variables and LOS.
| Variable | Mean ± SDa | Spearman ρ | P Valueb |
| Number of unique complicationsc | 2.5 ± 3.1 | 0.67 | <0.0001b |
| N (%)d | LOS, median ± IQR | ||
| Cardiac | 0.002b | ||
| No | 176 (89.8) | 6.7 ± 5.5 | |
| Yes | 20 (10.2) | 14.4 ± 27.1 | |
| Pulmonary | <0.0001b | ||
| No | 70 (35.7) | 5.8 ± 3.1 | |
| Yes | 126 (64.3) | 13.0 ± 15.9 | |
| Gastrointestinal | <0.0001b | ||
| No | 154 (78.6) | 6.0 ± 3.3 | |
| Yes | 42 (21.4) | 16.2 ± 18.4 | |
| Renal/genitourinary | <0.0001b | ||
| No | 137 (69.9) | 6.0 ± 4.2 | |
| Yes | 59 (30.1) | 11.3 ± 11.1 | |
| Skin | 0.001b | ||
| No | 189 (96.4) | 6.7 ± 6.2 | |
| Yes | 7 (3.6) | 23.6 ± 37.3 | |
| Neurologic | 0.0001b | ||
| No | 174 (88.8) | 6.6 ± 5.0 | |
| Yes | 22 (11.2) | 13.4 ± 20.5 | |
| Hematologic/infectious | <0.0001b | ||
| No | 124 (63.3) | 6.0 ± 4.4 | |
| Yes | 72 (36.7) | 8.9 ± 12.8 | |
| Discharge facility | <0.0001b | ||
| Home | 60 (31.1) | 5.0 ± 2.0 | |
| Rehabilitation | 131 (67.9) | 8.5 ± 9.9 | |
| Other | 2 (1.0) | 3.1 ± 0.9 | |
| 30-day readmission | 0.51 | ||
| No | 190 (96.9) | 6.8 ± 6.7 | |
| Yes | 6 (3.1) | 6.3 ± 5.6 | |
| Reoperation | 0.93 | ||
| No | 193 (98.5) | 6.8 ± 6.7 | |
| Yes | 3 (1.5) | 6.7 ± 7.4 |
↵a Continuous variables reported as mean ± SD and Spearman ρ correlation with LOS.
↵b Indicates statistically significant values with P < 0.05.
↵c See Appendix A for list of complications tracked.
↵d Categorical variables reported as N (%) and median LOS ± IQR.
IQR, interquartile range; LOS, length of stay.