Unadjusted rates of specific complications and readmission after propensity score matching
| Variable | No. (%) of patients; length of stay | p value | ||||
|---|---|---|---|---|---|---|
| 0 d n = 782 | 1 d n = 6733 | 2 d n = 17 932 | 3 d n = 27 211 | 4 d n = 1764 | ||
| Major complications | 9 (1.2) | 45 (0.7) | 157 (0.9) | 312 (1.2) | 22 (1.3) | < 0.001* |
| Myocardial infarction | 2 (0.3) | 2 (0) | 16 (0.1) | 29 (0.1) | 5 (0.3) | 0.021* |
| Deep vein thrombosis | 3 (0.4) | 17 (0.3) | 37 (0.2) | 101 (0.4) | 8 (0.5) | 0.020* |
| Pulmonary embolism | 1 (0.1) | 7 (0.1) | 32 (0.2) | 45 (0.2) | 0 (0) | 0.90 |
| Stroke | 0 (0) | 0 (0) | 0 (0) | 12 (0) | 0 (0) | 0.017* |
| Septic shock | 0 (0) | 0 (0) | 3 (0) | 10 (0) | 0 (0) | 0.34 |
| Cardiac arrest | 0 (0) | 0 (0) | 1 (0) | 9 (0) | 0 (0) | 0.16 |
| Deep surgical site infection | 4 (0.5) | 17 (0.3) | 73 (0.4) | 130 (0.5) | 8 (0.5) | 0.04* |
| Reintubation | 0 (0) | 3 (0) | 5 (0) | 14 (0.1) | 1 (0.1) | 0.76 |
| Ventilator > 48 h | 0 (0) | 2 (0) | 1 (0) | 8 (0) | 0 (0) | 0.58 |
| Minor complications | 10 (1.3) | 73 (1.1) | 224 (1.3) | 411 (1.5) | 36 (2.0) | < 0.001* |
| Superficial surgical site infection | 0 (0.0) | 28 (0.4) | 86 (0.5) | 150 (0.6) | 14 (0.8) | 0.008* |
| Pneumonia | 1 (0.1) | 7 (0.1) | 18 (0.1) | 34 (0.1) | 5 (0.3) | 0.32 |
| Urinary tract infection | 9 (1.2) | 35 (0.5) | 88 (0.5) | 168(0.6) | 14 (0.8) | 0.05 |
| Wound dehiscence | 0 (0.0) | 5 (0.1) | 21 (0.1) | 20 (0.1) | 3 (0.2) | 0.89 |
| Sepsis | 0 (0.0) | 9 (0.1) | 25 (0.1) | 57 (0.2) | 2 (0.1) | 0.08 |
| Renal insufficiency | 0 (0.0) | 3 (0.0) | 6 (0.0) | 7 (0.0) | 2 (0.1) | 0.86 |
| Readmission | 18 (2.3) | 174 (2.6) | 489 (2.8) | 840 (3.2) | 58 (3.4) | 0.002* |
↵* Adjusted for all variables in Table 1 plus admission year.