Table 1. Selected characteristics among case-patients with invasive MRSA, by healthcare-related risk factors (HRFs), Active Bacterial Core Surveillance, January 2004–February 2006*.
| Characteristic | With HRFs, no. (%) |
Without HRFs, no. (%) |
|
|---|---|---|---|
| Healthcare-associated, n = 2,535 | Healthcare-associated, community onset, n = 5,353 | Community-associated,† n = 1,259 | |
| Median age, y | 62‡ | 62‡ | 46 |
| Pneumonia | 413 (16.3) | 685 (12.8)‡ | 190 (15.1) |
| Endocarditis | 72 (2.8)‡ | 345 (6.4)‡ | 158 (12.6) |
| Died | 687 (27.1)‡ | 845 (15.8)‡ | 131 (10.4) |
*MRSA, methicillin-resistant Staphylococcus aureus; HRFs, healthcare-related risk factors. †Patients with community-associated infections were those who did not have HRFs; these patients were used as reference. ‡p<0.05 for χ2 test for categorical variables; Wilcoxon rank sum for age.