Table 2.
Characteristics of the study population.
| Characteristic | All Patients (n = 126) |
Infected (n = 59) |
Non-Infected (n = 67) |
P |
|---|---|---|---|---|
| Sex (M:F) | 62:64 | 34:25 | 28:39 | 0.08 b |
| BMI a | 28.0 (24.6–30.2) |
29.4 (25.4–32.0) |
26.8 (24.7–29.5) |
0.10 c |
| CCI | 0: 7 pts (5.6%) | 0: 5 pts (8.5%) | 0: 2 pts (3%) | 0.29 b |
| 1: 16 pts (12.7%) | 1: 8 pts (13.6%) | 1: 8 pts (12%) | ||
| 2: 35 pts (27.8%) | 2: 19 pts (32.2%) | 2: 16 pts (24%) | ||
| 3: 33 pts (26.2%) | 3: 10 pts (17%) | 3: 23 pts (34.3%) | ||
| 4: 16 pts (12.7%) | 4: 7 pts (11.9%) | 4: 9 pts (13.4%) | ||
| 5: 9 pts (7.1%) | 5: 3 pts (5.0%) | 5: 6 pts (9%) | ||
| 6: 3 pts (2.4%) | 6: 2 pts (3.4%) | 6: 1 pts (1.5%) | ||
| ASA score | 1: 27 pts (21.4%) | 1: 17 pts (28.8%) | 1: 10 pts (15%) | 0.05 b |
| 2: 64 pts (50.8%) | 2: 23 pts (39%) | 2: 41 pts (61.2%) | ||
| 3: 28 pts (22.2%) | 3: 14 pts (23.7%) | 3: 14 pts (20.9%) | ||
| Age at surgery a | 68 (60–75) | 70 (61.5–76) | 66 (57–74) | 0.17 c |
a Age in years; median and IQR. b Chi-square. c Mann–Whitney. BMI, body mass index. M, male; F, female. CCI, Charlson Comorbidity Index. ASA, American Society of Anesthesiologists. CCI and ASA score were not available for 7 patients, including 5 infected and 2 non-infected subjects.