Table 1.
Baseline characteristics of the PJI and FRI cohorts
| Characteristic | PJI (n = 76) | FRI (n = 77) | p-value |
|---|---|---|---|
| Demographic data | |||
| Gender (male), n (%) | 36 (47.4%) | 45 (57.7%) | n.s |
| Age, years (95% CI) | 68.0 (65.6–70.6) | 64.7 (62.1–67.4) | n.s |
| BMI (kg/m2) | 23.8 ± 3.9 | 24.1 ± 3.7 | n.s |
| CCI (95% CI) | 1 (0–4) | 1 (0–3) | n.s |
|
Delay from prosthesis implantation/ trauma to infection, days (95% CI) |
28 days (14 days-16 months) | 7 days (3 days-19 days) | 0.000 |
| Sites, n (%) | |||
| Hip | 48 (63.2%) | 3 (3.9%) | |
| Knee | 28 (36.8%) | 8 (10.4%) | |
| Clavicle | 5 (6.5%) | ||
| Humerus | 9 (11.7%) | ||
| Ulna and/or radius | 12 (15.6%) | ||
| Femur | 15 (19.5%) | ||
| Tibia and/or fibula | 33 (41.6%) | ||
| Pedes | 11 (14.3%) | ||
| Microbiologic documentation | |||
| Multi-drug resistant, n (%) | 22 (29.3%) | 42 (44.7%) | 0.041 |
| Negative culture, n (%) | 26 (34.2%) | 18 (23.4%) | n.s |
| Polymicrobial infection, n (%) | 16 (21.1%) | 22 (28.6%) | n.s |