Table 1.
Study subject characteristics.
| Median age (range) | 19 (17–34) |
| Race/ethnicity | |
| Non-Hispanic/Latino | |
| White | 37 |
| Black or African American | 5 |
| Two races (White/Black or African American) | 2 |
| Not reported | 2 |
| Hispanic/Latino | |
| White | 5 |
| Not reported | 2 |
| S. aureus nasal colonization1 | |
| Non-colonized | 20 |
| Intermittent | 22 |
| Persistent | 9 |
| NA2 | 2 |
| Geographic origin3 | |
| Midwest | 12 |
| Northeast | 10 |
| South | 26 |
| West | 5 |
1S. aureus nasal colonization was defined based on culture-positive S. aureus in the nares over the five study visits: non-colonized (positive at 0 study visits), intermittent (positive at ≥ 1 and ≤ 3 study visits), or persistent (positive at ≥ 4 study visits).
2Was not assessed for the two subjects that did not complete the five study visits.
3Based on zipcode listed on intake forms upon arrival. Regions as defined by US Census Bureau.