Table 4.
Clinical variables: overall, and MRSA vs. non-MRSA
| All isolates, No. (%) of observations | MRSA, No. (%) | Non-MRSA, No. (%) | Unadjusted OR (95% CI) | Adjusted OR (95% CI)* | |
|---|---|---|---|---|---|
| Temperature, ≥37.8°C | 30/511 (6) | 7/112 (6) | 23/399 (6) | 1.09 (0.5-2.6) | - |
| Erythema ≥10 cm | 93/500 (19) | 38/110 (35) | 55/390 (14) | 3.2 (2.0 - 5.2) | 2.59 (1.5-4.4), P < 0.001 |
| Location | (N = 529) | (N = 115) | (N = 414) | ||
| Trunk† | 180 (34) | 54 (47) | 126 (30) | 2.01 (1.3-3.1) | - |
| Head and neck | 70 (13) | 12 (10) | 58 (14) | 0.97 (0.5-1.9) | - |
| Extremities | 279 (53) | 49 (43) | 230 (56) | 1 | - |
| Diagnosis group | (N = 529) | (N = 115) | (N = 414) | ||
| Abscess | 185 (35) | 66 (57) | 119 (29) | 3.33 (2.2-5.1) | 3.19 (2.1-5.0), P < 0.001 |
| Cellulitis | 183 (35) | 27 (23) | 156 (38) | 1‡ | |
| Other SSTIs | 161 (30) | 22 (19) | 139 (34) |
Abbreviations: MRSA, methicillin-resistant Staphylococcus aureus; OR, odds ratio; CI, confidence interval; SSTIs,
skin and soft-tissue infections.
* Adjusted for erythema ≥10 cm and diagnosis group.
†The trunk was defined as the body from and including the axillae to the upper one third of the thighs.
‡For modeling purposes, cellulitis and other SSTIs were grouped.