Table 1.
Characteristics of study participants (N = 6,053)
| Characteristics | Number of subjects (%) or mean (SD) |
| Demographics | |
| Mean age, years (SD) | 19.84 (1.57) |
| Gender (%) | |
| Female | 3,922 (64.6) |
| Male | 2,139 (35.2) |
| Year in school (%) | |
| Freshman | 1,967 (32.4) |
| Sophomore | 1,328 (21.9) |
| Junior | 1,288 (21.2) |
| Senior | 1,483 (26.3) |
| White non-Hispanic (%) | 5,691 (88.1) |
| Employment (%) | |
| Not working | 2,214 (36.5) |
| Part time | 3,544 (58.4) |
| Full time | 307 (5.1) |
| Health behaviors (in past 30 days) | |
| Mean days drank alcohol (SD) | 5.25 (5.57) |
| Mean days spent time around others' smoke (SD) | 7.57 (9.30) |
| Mean days exercising ≥20 min (SD) | 10.40 (8.67) |
| Mean days sleeping ≥6 hr (SD) | 21.82 (7.06) |
| Smoking variables | |
| Average days smoked in past 30 days (SD) | 3.61 (8.44) |
| Number of days smoking in past 30 days (%) | |
| 0 | 4,330 (71.5) |
| 1–4 | 701 (11.6) |
| 5–10 | 300 (5.0) |
| 11–20 | 192 (3.2) |
| 21–30 | 530 (8.9) |
| Among smokers | |
| Average days smoked in past 30 days (SD) | 12.68 (11.64) |
| Average number of cigarettes on smoking days (SD) | 3.70 (4.67) |
| Physical symptoms, number of subjects (SD) | |
| One or more days of cough or sore throat | 3,926 (64.91) |
| One or more days of shortness of breath | 2,792 (46.35) |