Table 1. Description of study population and characteristics associated with Staphylococcus aureus colonization among healthy, adult Old Order Amish in Lancaster County, PA, 2008–2009*.
| S. aureus colonization status | |||||
| Characteristic | Category | All participants | Non-persistent | Persistent | p- value† |
| Sample size | 398 | 327 | 71 | ||
| Age (years) | 46±15 | 46±15 | 46±14 | 0.90 | |
| Female sex | 289 (73) | 236 (72) | 53 (75) | 0.67 | |
| Adults in household | 2.0±1.4 | 2.0±1.4 | 2.1±1.4 | 0.57 | |
| Children in household | 3.3±2.8 | 3.3±2.8 | 3.1±2.7 | 0.61 | |
| Routinely handle animals | Yes | 247 (62) | 205 (63) | 42 (59) | 0.66 |
| No | 150 (38) | 121 (37) | 29 (41) | ||
| Don’t know | 1 (0) | 1 (0) | 0 (0) | ||
| History of skin boils or lesions | 6 (2) | 6 (2) | 0 (0) | 0.60 | |
| Surgery in last year | 14 (4) | 13 (4) | 1 (1) | 0.48 | |
| Hospitalized in last year | 20 (5) | 19 (6) | 1 (1) | 0.23 | |
| Taken antibiotics in last year | 55 (14) | 47 (14) | 8 (11) | 0.49 | |
*Values are mean ± SD or n (%).
†P values are from chi-square test, Fisher’s exact test or t-test, as appropriate.