Quantitative variables.
| Variable | Deformitya | Degenerative Diseasea | P Value |
| Age (y) | 73.9 ± 7.69 | 76.2 ± 5.83 | 0.642 |
| Duration of procedure (min) | 309 (210) | 218 (60.2) | 0.010 |
| Blood loss (g/dL) | 3.36 ± 1.18 | 3.01 ± 1.12 | 0.368 |
| Charlson Comorbidity Index | 4.89 ± 1.76 | 4.28 ± 0.83 | 0.298 |
| Body mass index (kg/m2) | 29.5 ± 4.54 | 29.9 ± 3.72 | 0.934 |
| Serum albumin levels (g/dL) | 4.06 ± 0.42 | 4.30 ± 0.35 | 0.119 |
| Time (d) elapsed between the initial operation and infection occurrence | 14.0 (8.00) | 13.0 (5.00) | 0.244 |
| C-reactive protein level (mg/dL) at admission | 18.0 ± 15.9 | 19.6 ± 12.2 | 0.560 |
| Duration (d) of empirical antibiotic therapy | 4.50 (1.50) | 5.00 (2.75) | 0.465 |
| Duration (d) of targeted antibiotic therapy | 90.0 (19.8) | 63.5 (27.5) | 0.039 |
| Total duration (d) of antibiotic therapy | 94.5 (21.5) | 67.5 (27.0) | 0.048 |
| Duration (d) of intravenous treatment | 30.0 (23.0) | 21.5 (17.8) | 0.537 |
↵a Data are expressed as mean ± SD. The exceptions are for data on duration expressed in minutes or days, which are expressed as medians (interquartile ranges).