Table 1.
Univariate risk factors for MRSA infection versus other bacterial pathogens among emergency department patients with purulent skin and soft tissue infections
| Variable | Sub-variable | MRSA (n = 18) | % | Other bacteria (n = 60) | % | Odds Ratio (95% CI) |
|---|---|---|---|---|---|---|
| Sex | Female | 8 | 44% | 12 | 20% | 3.2 (1.0–9.9) |
| Nationality | Emirati nationala | 5 | 28% | 14 | 23% | 1.3 (0.4–4.2) |
| Accommodation | Shared | 6 | 33% | 19 | 32% | REF |
| Home | 9 | 50% | 29 | 48% | 1.0 (0.3–3.3) | |
| Camp | 2 | 11% | 9 | 15% | 1.4 (0.2–8.5) | |
| Past Medical Historyb | Yes | 1 | 6% | 9 | 15% | 0.3 (0.0–3.8) |
| Risk factors | Incarcerated in past year | 1 | 6% | 0 | 0% | |
| Play contact sports | 5 | 28% | 8 | 13% | 2.5 (0.7–8.9) | |
| HH member with skin infection | 1 | 6% | 2 | 3% | 0.6 (0.2–2.3) | |
| Recent hospitalizationc | 1 | 6% | 3 | 5% | 0.4 (0.1–5.9) | |
| ICU stay in past year | 0 | 0% | 0 | 0% | ||
| Recent skin infection | Abscess/cellulitis | 3 | 17% | 15 | 25% | 0.6 (0.2–2.4) |
| Antibiotic use last 3 months | Yes | 5 | 28% | 19 | 32% | 1.3 (0.5–4.0) |
| MRSA suspected by clinician | Yes (vs no or not sure) | 2 | 11% | 2 | 3% | 3.6 (0.5–27.3) |
| Current infection | Multiple abscesses/lesions | 4 | 22% | 4 | 7% | 3.9 (0.9–17.7) |
| Associated cellulitis | 15 | 83% | 48 | 80% | 1.5 (0.4–6.0) |
aVersus expatriates
bIncluded diabetes, hypertension, asthma, thalassemia, coronary artery disease, osteosarcoma. Some with multiple medical problems
cPast 3 months
HH Household