Table 3 Outcomes of included patients
Variables | Total (n = 1046) | Non-SSI group (n = 972) | SSI group (n = 74) | p value |
|---|---|---|---|---|
Length of hospital stay, day, median (IQR) | 16.0 (12.0–21.0) | 15.0 (12.0–21.0) | 22.5 (17.0–33.0) | < 0.001 |
Length of postoperative stay, day, median (IQR) | 9.0 (7.0–12.0) | 9.0 (7.0–12.0) | 15.0 (11.0–24.0) | < 0.001 |
30-day mortality, n, (%) | 6(0.6%) | 3 (0.3%) | 3 (4.1%) | 0.006 |
Medical cost, yuan, median (IQR) | 58,982 (42972–79,262) | 57,827 (42000–77,919) | 74,620 (59078–107,612) | < 0.001 |
Surgery to SSI time, day, median (IQR) | – | – | 5.5 (3.0–9.0) | – |
SSI type, n, (%) | – | – |  | – |
 Superficial incisional infection | – | – | 32 (43.2%) | – |
 Deep incisional infection | – | – | 18 (24.3%) | – |
 Organ-space infection | – | – | 24 (32.4%) | – |
Pathogen, n, (%) | ||||
 Escherichia coli | – | – | 25(33.8%) | – |
 Klebsiella pneumoniae | – | – | 4(5.4%) | – |
 Enterococcus faecalis | – | – | 3(4.1%) | – |
 Enterococcus faecium | – | – | 2(2.7%) | – |
 Morganella morganii | – | – | 2(2.7%) | – |
 Candida albicans | – | – | 2(2.7%) | – |
 Pseudomonas aeruginosa | – | – | 1(1.4%) | – |
 Acinetobacter baumanii | – | – | 1(1.4%) | – |
 Staphylococcus aureus | – | – | 1(1.4%) | – |
 Proteus mirabilis | – | – | 1(1.4%) | – |
 Enterobacter cloacae | – | – | 1(1.4%) | – |
 Staphylococcus epidermidis | – | – | 1(1.4%) | – |
 Negative | – | – | 21(28.4%) | – |
 None of germiculture | – | – | 17(23.0%) | – |