Table 3 Multivariable analysis of factors associated with wound colonization by Staphylococcus aureus
Independent variables | Wound colonization by S. aureus | p | PR (95% CI) | p | PRadjusted(95% CI) | ||
|---|---|---|---|---|---|---|---|
| Â | Â | Absent | Present | Â | Â | Â | Â |
| Â | Â | n (%) | n (%) | Â | Â | Â | Â |
Nasal S. aureus | Present | 6 (28.60) | 15 (71.40) | <0.001 | 7.43 | <0.001 | 4.39 |
Absent | 94 (90.40) | 10 (9.60) | Â | (3.88-14.21) | Â | (2.22-8.66) | |
Prior antibiotic use | ≥3 days | 57 (90.50) | 6 (9.50) | 0.01 | 0.31 | 0.04 | 0.49 |
<33Â days | 43 (69.40) | 19 (30.60) | Â | (0.13-0.73) | Â | (0.25-0.99) | |
Type of ward | Medical | 63 (74.10) | 22 (25.90) | 0.03 | 3.45 | 0.02 | 3.06 |
Surgical or ICU | 37 (92.50) | 3 (7.50) | Â | (1.10-10.86) | Â | (1.15-8.14) | |
Marital status | Unmarried | 58 (74.40) | 20 (25.60) | 0.07 | 2.41 | 0.64 | 1.27 |
Married | 42 (89.40) | 5 (10.60) | Â | (0.97-5.99) | Â | (0.46-3.45) | |
Wound acquisition | Hospital | 29 (93.50) | 2 (6.50) | 0.05 | 0.26 | 0.16 | 0.38 |
Community | 71 (75.50) | 23 (24.50) | Â | (0.07-1.05) | Â | (0.10-1.46) | |
Prior hospitalization | Yes | 67 (84.80) | 12 (15.20) | 0.13 | 0.54 | 0.40 | 0.76 |
No | 33 (71.70) | 13 (28.30) | Â | (0.27-1.08) | Â | (0.40-1.44) | |
Age | ≥65 years | 46 (74.20) | 16 (25.80) | 0.17 | 1.81 | 0.05 | 1.92 |
<65Â years | 54 (85.70) | 9 (14.30) | Â | (0.86-3.78) | Â | (0.99-3.75) | |
Sex | Male | 48 (76.20) | 15 (23.80) | 0.39 | 1.48 | 0.90 | 1.04 |
| Â | Female | 52 (83.90) | 10 (16.10) | Â | (0.72-3.30) | Â | (0.52-2.10) |