Table 3.
Univariate Analysis of Risk Factors For a MRSA IAI
| Non-MRSA IAI n=195 | MRSA IAI n=45 | p* | |
|---|---|---|---|
| Any IAI intervention within 30 d | 190 (97%) | 40 (89%) | 0.01 |
| Post-operative infection | 99 (51%) | 24 (53%) | 0.76 |
| Intensive care unit status | 19 (10%) | 3 (7%) | 0.77 |
| Trauma | 7 (4%) | 0 (0%) | 0.35 |
| Transplant | 34 (18%) | 5 (11%) | 0.30 |
| APACHE II | 13 (8–20) | 12 (7–17) | 0.20 |
| Transfusion | 52 (27%) | 9 (20%) | 0.35 |
| Fever | 55 (28%) | 10 (22%) | 0.42 |
| Tmax | 37.6 (37–38.4) | 37.4 (37–38.4) | 0.72 |
| White blood cell count (×109/L) | 14.6 (10–26) | 12.3 (9.1–14.8) | 0.01 |
| WBC <11 | 55 (28%) | 22 (49%) | 0.01 |
| WBC 11–15 | 46 (23%) | 13 (29%) | 0.46 |
| WBC 15–20 | 43 (22%) | 5 (11%) | 0.10 |
| WBC >20 | 51 (26%) | 5 (11%) | 0.03 |
*
Significance p<0.05
APACHE=Acute Physiology and Chronic Health Evaluation; MRSA=methicillin-resistant Staphylococcus aureus (MRSA); IAI=intra-abdominal infection; WBC=white blood cell count.