| n | Crude odds ratio (CI)§ | p value | N | Adjusted odds ratio (CI)*§ | p value |
---|---|---|---|---|---|---|
Microbiological cleanliness (ACC < 2.5 cfu/cm2) | ||||||
 Pre-intervention | 361 | 1.22 (1.04–1.44) | 0.014 | 355 | 1.33 (1.11–1.60) | 0.002 |
 Post-intervention | 668 | 1.08 (1.03–1.12) |  < 0.001 | 652 | 1.08 (1.03–1.13) |  < 0.001 |
Absence of S. aureus | ||||||
 Pre-intervention | 367 | 1.03 (0.85–1.26) | 0.731 | 361 | 1.12 (0.87–1.45) | 0.379 |
 Post-intervention | 673 | 1.04 (0.96–1.13) | 0.350 | 657 | 1.02 (0.93–1.11) | 0.734 |
Cleaning action (gel dots) | ||||||
 Pre-intervention | 647 | 1.23 (1.13–1.33) |  < 0.001 | 634 | 1.25 (1.15–1.36) |  < 0.001 |
 Post-intervention | 1252 | 0.95 (0.92–0.98) | 0.002 | 1190 | 0.97 (0.94–1.01) | 0.098 |