Table.
Baseline characteristics of enrolled subjects and colonization status at enrollment
| Characteristics | All subjects (N = 168) | Colonization status at enrollment | |||
|---|---|---|---|---|---|
| MRSA colonization at enrollment (N = 9) | MSSA colonization at enrollment (N = 34) | No S aureus colonization at enrollment (N = 125) | P value | ||
| Age, y, median (IQR) | 6 (2.2-10.3) | 10.4 (4.1-13.1) | 5.7 (1.8-9.5) | 5.9 (2.3-10.3) | .09 |
| Female sex, n (%) | 81 (48.2) | 4 (44.4) | 18 (52.9) | 60 (48) | .95 |
| Race, n (%) | .68 | ||||
| White | 86 (52.2) | 5 (55.5) | 16 (47.1) | 65 (52) | |
| African American | 67 (39.9) | 4 (44.4) | 12 (35.3) | 51 (40.8) | |
| Asian | 11 (6.5) | 0 | 4 (11.8) | 7 (5.6) | |
| Native American | 2 (1.2) | 0 | 1 (2.9) | 1 (0.8) | |
| Pacific Islander | 1 (0.6) | 0 | 1 (2.9) | 0 | |
| Other race | 12 (7.1) | 0 | 2 (5.9) | 10 (8) | |
| Race not disclosed | 2 (1.2) | 0 | 0 | 2 (1.6) | |
| Hispanic ethnicity, n (%) | 52 (30.9) | 4 (44.4) | 9 (23.5) | 40 (32) | .53 |
| Insurance status, n (%) | .57 | ||||
| Private | 82 (48.8) | 5 (55.5) | 20 (58.8) | 57 (45.6) | |
| Public | 77 (45.8) | 4 (44.4) | 12 (35.3) | 61 (48.8) | |
| Both private and public | 3 (1.8) | 0 | 1 (2.9) | 2 (1.6) | |
| Uninsured | 5 (2.9) | 0 | 1 (2.9) | 4 (3.2) | |
| Number of people in household, median (IQR) | 4 (3-5) | 5 (4-5) | 4.5 (4-5) | 4 (3-5) | .51 |
| Personal history of SSTI in the preceding 90 d, n (%) | 9 (5.4) | 0 | 3 (8.8) | 6 (4.8) | .61 |
| History of SSTI in household members in preceding 90 d, n (%) | 6 (3.6) | 0 | 0 | 6 (4.8) | .49 |
| Personal history of known S aureus infection, n (%) | 4 (2.4) | 0 | 1 (2.9) | 3 (2.4) | 1 |
| Site of enrollment, n (%) | .26 | ||||
| Clinic A | 83 (49.4) | 2 (22.2) | 15 (44.1) | 66 (52.8) | |
| Clinic B | 85 (50.6) | 7 (77.8) | 19 (55.9) | 59 (47.2) | |