Table 6.
Baseline Demographic Information on Participants in the Personal Exposure Sampling
| Variable | Overall | Near Dorm | Far Dorm |
|---|---|---|---|
| (n = 51) | (n = 23) | (n = 28) | |
| Age, mean (SD) | 19.3 (0.85) | 19.2 (0.9) | 19.4 (0.8) |
| BMI (SD) | 23.3 (3.0) | 22.7 (3.1) | 23.9 (2.9) |
| Sex, n (%) | |||
| Female | 24 (47.1) | 11 (47.8) | 13 (46.4) |
| Male | 27 (52.9) | 12 (52.2) | 15 (53.6) |
| Academic year, n (%) | |||
| Freshman | 29 (56.9) | 16 (69.6) | 13 (46.4) |
| Sophomore | 14 (27.5) | 2 (8.7) | 12 (42.9) |
| Junior | 7 (13.7) | 4 (17.4) | 3 (10.7) |
| Senior | 1 (2.0) | 1 (4.3) | 0 (0.0) |
| Time in dorm prior to first plasma sample collection | 69(119) | 86(161) | 55(67) |
| Time spent outdoors,a n (%) | |||
| Less than 1 hr | 4 (8.0) | 2 (8.7) | 2 (7.4) |
| 1–2 hr | 21 (42.0) | 11 (47.8) | 10 (37.0) |
| 3–4 hr | 18 (36.0) | 8 (34.8) | 10 (37.0) |
| 5 hr or more | 7 (14.0) | 2 (8.7) | 5 (18.5) |
| Time spent in vehicle,a n (%) | |||
| Less than 1 hr | 20 (40.0) | 8 (34.8) | 12 (44.4) |
| 1–2 hr | 27 (54.0) | 14 (60.9) | 13 (48.1) |
| 3–4 hr | 2 (4.0) | 1 (4.3) | 1 (3.7) |
| 5 hr or more | 1 (2.0) | 0 (0.0) | 1 (3.7) |
a Daily estimated average of time–activity patterns prior to the study, obtained from participant baseline questionnaires.