Table 2.
Results of statistical analysis of risk factors for failure
| Variable | Success (n = 48 joints) | Failure (n = 90 joints) | p Value |
|---|---|---|---|
| Infection presentation | 0.22 | ||
| Acute postoperative | 16 (33.3%) | 36 (40%) | |
| Acute delayed | 22 (45.8%) | 28 (31.1%) | |
| Chronic | 10 (20.8%) | 26 (28.8%) | |
| Body mass index (kg/m2)* | 33.7 (30.6–36.7) | 31.7 (29.3–34.1) | 0.35 |
| Age (years)* | 63 (59.1–66.9) | 64.5 (62–66.9) | 0.53 |
| Methicillin-resistant | 12 (25%) | 35 (38.9%) | 0.10 |
| Staphylococcus infection | 19 (39.5%) | 65 (69.2%) | < 0.001 |
| Staphylococcus aureus | 11 (57.8%) | 45 (50%) | 0.14 |
| Staphylococcus epidermis | 7 (36.8%) | 20 (22.2%) | |
| Staphylococcus capitis | 1 (5.2%) | 0 (0%) | |
| Methicillin-sensitive | 8 (30.7%) | 29 (50%) | 0.10 |
| Gram-negative infection | 9 (18.8%) | 8 (8.8%) | 0.09 |
| Culture-negative | 11 (22.9%) | 8 (8.8%) | 0.02 |
| Hip | 18 (47.5%) | 42 (46.6%) | 0.30 |
| Women | 27 (30%) | 50 (55.6%) | 0.93 |
| Charlson comorbidity index* | 2.3 (1.7–2.9) | 2.4 (2–2.8) | 0.71 |
* Values are expressed as mean, with 95% confidence intervals in parentheses; the remaining values are expressed as number of joints, with percentages in parentheses.