Table 1. Descriptive statistics for the full sample (at true baseline) and marijuana users and non-users (as classified at 6-week pre-BMI assessment).
| Marijuana Users | Non-Users | ||||||
|---|---|---|---|---|---|---|---|
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|
|
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| Full sample (N = 530) |
BMI (n = 118) |
AO (n = 116) |
Total (n = 234) |
BMI (n = 88) |
AO (n = 82) |
Total (n = 170) |
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|
|
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| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | |
| Gender | |||||||
| Male | 355 (67) | 75 (64) | 83 (72) | 158 (68) | 60 (68) | 54 (66) | 114 (67) |
| Female | 175 (33) | 43 (36) | 33 (28) | 76 (33) | 28 (32) | 28 (34) | 56 (33) |
| Race | |||||||
| White | 509 (96) | 116 (98) | 108 (93) | 224 (96) | 87 (99) | 75 (92) | 162 (95) |
| Non-White | 21 (4) | 2 (2) | 8 (7) | 10 (4) | 1 (1) | 7 (9) | 8 (5) |
| Year in School | |||||||
| Freshman | 360 (68) | 76 (64) | 88 (76) | 164 (70) | 56 (64) | 55 (67) | 111 (65) |
| Sophomore | 126 (24) | 34 (29) | 19 (16) | 53 (23) | 22 (25) | 20 (24) | 42 (25) |
| Upperclassman | 41 (8) | 8 (7) | 8 (7) | 16 (7) | 9 (10) | 6 (7) | 15 (9) |
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| M (SD) | M (SD) | M (SD) | M (SD) | M (SD) | M (SD) | M (SD) | |
|
|
|
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| Age | 18.68 (0.79) | 18.65 (0.77) | 18.60 (0.77) | 18.69 (0.83) | 18.68 (0.88) | 18.70 (0.78) | 18.69 (0.83) |
Note. There were no significant baseline demographic or substance use group differences. AO = Assessment Only condition. BMI = Brief Motivational Intervention condition.