| Preintervention | Postintervention | |||||
---|---|---|---|---|---|---|---|
 |  | 0 drinks | 1-3 drinks | 4-6 drinks | 7-9 drinks | 10-12 drinks | 13+ drinks |
Peak number in a day | 0 drinks | 68.1 | 11.9 | 6.8 | 4.2 | 3.6 | 5.4 |
 | (n = 2,963) |  |  |  |  |  |  |
 | 1-3 drinks | 12.1 | 42.5 | 24.2 | 9.3 | 6.1 | 5.8 |
 | (n = 1,923) |  |  |  |  |  |  |
 | 4-6 drinks | 5.6 | 13.0 | 38.9 | 21.3 | 11.8 | 9.4 |
 | (n = 1,443) |  |  |  |  |  |  |
 | 7-9 drinks | 4.7 | 7.4 | 15.6 | 32.5 | 21.9 | 17.9 |
 | (n = 761) |  |  |  |  |  |  |
 | 10-12 drinks | 4.9 | 6.6 | 11.0 | 13.6 | 27.2 | 36.7 |
 | (n = 589) |  |  |  |  |  |  |
 | ≥13 drinks | 4.2 | 4.2 | 4.2 | 7.2 | 11.6 | 68.6 |
 | (n = 708) |  |  |  |  |  |  |
 |  | 0 drinks | 1-3 drinks | 4-6 drinks | 7-9 drinks | 10+ drinks |  |
Usual number of drinks | 0 drinks | 66.0 | 15.7 | 9.6 | 4.2 | 4.5 | Â |
 | (n = 2,918) |  |  |  |  |  |  |
 | 1-3 drinks | 8.5 | 56.9 | 24.2 | 6.0 | 4.4 |  |
 | (n = 3,008) |  |  |  |  |  |  |
 | 4-6 drinks | 6.6 | 17.9 | 48.1 | 17.7 | 9.7 |  |
 | (n = 1,438) |  |  |  |  |  |  |
 | 7-9 drinks | 3.9 | 8.9 | 20.1 | 40.7 | 26.4 |  |
 | (n = 518) |  |  |  |  |  |  |
 | ≥10 drinks | 5.9 | 8.9 | 9.3 | 15.5 | 60.4 |  |
 | (n = 505) |  |  |  |  |  |  |
 |  | Never | ≤1x week | ≥2x week |  |  |  |
Per week marijuana drug use | Never | 88.8 | 7.4 | 3.8 | Â | Â | Â |
 | (n = 7,121) |  |  |  |  |  |  |
 | ≤1x week | 25.2 | 53.2 | 21.6 |  |  |  |
 | (n = 607) |  |  |  |  |  |  |
 | ≥2x week | 12.7 | 13.2 | 74.1 |  |  |  |
 | (n = 598) |  |  |  |  |  |  |