Table 1.
Sociodemographic characteristics of students (N = 19,838)
| Total |
||||
| Variable | Treatment % or M (SD) | Control % or M (SD) | % or M (SD) | n |
| Sex | ||||
| Male | 37.9% | 39.6% | 38.9% | 7,664 |
| Female | 62.1% | 60.4% | 61.1% | 12,099 |
| Race/ethnicity | ||||
| African American/Black | 6.7% | 6.2% | 6.5% | 1,271 |
| Asian | 8.5% | 9.7% | 9.2% | 1,802 |
| Hispanic/Latino(a) | 9.4% | 5.5% | 7.4% | 1,452 |
| Other | 5.0% | 4.7% | 4.7% | 957 |
| White | 74.7% | 79.0% | 76.9% | 15,149 |
| Age | ||||
| <21 years old | 50.1% | 52.1% | 48.3% | 9,622 |
| ≥21 years old | 49.9% | 47.9% | 51.7% | 10,056 |
| Class year | ||||
| Freshman | 23.6% | 23.0% | 23.3% | 4,596 |
| Sophomore | 21.2% | 22.3% | 21.7% | 4,299 |
| Junior | 25.9% | 25.4% | 25.7% | 5,075 |
| Senior | 29.3% | 29.3% | 29.3% | 5,801 |
| Student status | ||||
| Full time | 91.4% | 93.2% | 92.3% | 18,179 |
| Part time | 8.6% | 6.8% | 7.7 | 1,513 |
| Grade-point average | ||||
| A | 31.9% | 35.0% | 33.5% | 6,609 |
| B | 53.7% | 51.4% | 52.5% | 10,359 |
| C or below | 14.4% | 13.5% | 14.0% | 2,750 |
| Residence type | ||||
| Residence hall/dormitory | 33.8% | 40.0% | 38.0% | 7,290 |
| Fraternity/sorority house | 2.1% | 2.0% | 2.1% | 403 |
| House/apartment | 62.4% | 56.6% | 58.3% | 11,709 |
| Other | 1.8% | 1.4% | 1.6% | 312 |
| Living situation | ||||
| With roommate(s) | 55.4% | 61.5% | 58.5% | 11,520 |
| Alone | 9.7% | 11.8% | 10.8% | 2,120 |
| With family/others | 34.9% | 26.7% | 30.7% | 6,042 |
| Fraternity/sorority membership | ||||
| Fraternity/sorority member or pledge | 19.7% | 17.0% | 18.3% | 3,483 |
| Not a fraternity/sorority member | 80.3% | 83.0% | 81.7% | 15,522 |
| Athletics | ||||
| Intercollegiate athlete | 7.3% | 7.6% | 7.5% | 1,406 |
| Not intercollegiate athlete | 92.7% | 92.4% | 92.5% | 17,517 |
| Alcohol use in high school | ||||
| Drinker | 53.8% | 54.2% | 54.1% | 10,493 |
| Abstainer | 46.2% | 45.8% | 45.9% | 9,000 |
| Alcohol consumption | ||||
| No. of drinks per week | 5.3 (8.4) | 5.6 (8.7) | 5.4 (8.6) | 19,682 |
| No. of drinks when partying | 3.8 (3.6) | 3.9 (3.6) | 3.9 (3.6) | 19,838 |
| Maximum recent consumption | 4.32 (5.07) | 4.3 (5.0) | 4.3 (5.0) | 19,540 |
| Composite drinking scale | 0.04 (3.63) | 0.1 (3.6) | 0.1 (3.6) | 16,695 |
| Campus alcohol environment (N = 32) | ||||
| No. of on-sale outlets per 1,000 students enrolled | 29.6 (34.8) | 24.2(31.5) | 26.8 (33.2) | |
Notes: All differences between treatment and control campuses were nonsignificant, with two exceptions: residence type, where treatment campus students were significantly (p < .05) less likely to (a) live in residence halls or (b) live with roommates.