Table 2.
Surgical site infections (SSI) in the study cohort
| Control N (SSIR) |
Adherent to protocol N (SSIR) |
Intervention N (SSIR) |
Total N (SSIR) |
|||
|---|---|---|---|---|---|---|
| Control vs. Adherent to protocol IRR [95%CI], p-value |
Control vs. Intervention IRR [95%CI], p-value |
|||||
| Overall | ||||||
| Total infections | 42 (0.68) | 11 (0.59) | 65 (0.91) | 107 (0.80) |
0.87 [0.42, 1.64] 0.68 |
1.32 [0.90, 1.96] 0.15 |
| Hip infections | 29 (0.80) | 10 (0.96) | 49 (1.17) | 78 (1.00) |
1.22 [0.56, 2.43] 0.60 |
1.47 [0.94, 2.36] 0.09 |
| Knee infections | 13 (0.52) | 1 (0.12) | 16 (0.53) | 29 (0.53) |
0.26 [0.01, 1.33] 0.12 |
1.02 [0.49, 2.18] 0.95 |
| S. aureus | ||||||
| Infections due to S. aureus | 15 (0.24) | 1 (0.05) | 10 (0.14) | 25 (0.19) |
0.25 [0.01, 1.23] 0.10 |
0.57 [0.25, 1.27] 0.17 |
| Hip S. aureus infections | 10 (0.27) | 1 (0.10) | 6 (0.14) | 16 (0.20) |
0.40 [0.02, 2.09] 0.32 |
0.52 [0.18, 1.45] 0.22 |
| Knee S. aureus infections | 5 (0.20) | 0 (0.00) | 4 (0.13) | 9 (0.16) |
0 [0.00, 2.48] 0.24 |
0.67 [0.16, 2.63] 0.56 |
SSIR Surgical site infection rate, Infections/100surgeries, IRR Incidence Rate Ration