Table S2.
Differences in surgical characteristics between patients with and without postoperative pulmonary complications
| No postoperative pulmonary complications (n=324) | Postoperative pulmonary complications (n=63) | P-value | |
|---|---|---|---|
| Emergency operation | 22 (6.8) | 19 (30.2) | <0.001 |
| Anesthesia time (min)a | 190.0 (110.0, 300.0) | 310.0 (157.5, 687.5) | <0.001 |
| Incision to close time (min)a | 132.0 (68.5, 243.5) | 230.0 (115.0, 575.0) | <0.001 |
| Laparoscopic surgery | 135 (41.7) | 10 (15.9) | <0.001 |
| Upper abdominal surgery | 230 (71.0) | 45 (71.4) | 1.000 |
| RBCs for transfusion (pack)a | 2.0 (0.0, 2.0) | 3.0 (2.0, 16.5) | <0.001 |
Notes: Data are presented as numbers (%) unless otherwise indicated.
a
Median (interquartile range).
Abbreviation: RBC, red blood cell.