Descriptive statistics for behavioural variable measures
| Pretest (n=2,415) | Posttest (n=1,992) | Follow-up (n=1,709) | ||||
|---|---|---|---|---|---|---|
| M (SD) | M (SD) | M (SD) | ||||
| Measure | Treatment | Control | Treatment | Control | Treatment | Control |
| Lifetime alcohol consumption | 5.10 (10.09) | 6.08 (11.16) | 9.66 (12.93) | 11.32 (13.83) | 7.14 (12.17) | 8.40 (13.27) |
| Past month alcohol consumption | 1.04 (2.78) | 1.23 (3.27) | 1.34 (3.03) | 1.88 (3.78) | 1.40 (3.19) | 1.93 (3.84) |
| Lifetime risky alcohol use | 3.81 (8.87) | 5.14 (11.19) | 4.32 (10.06) | 5.77 (11.84) | 4.80 (10.80) | 5.04 (10.41) |
| Past month risky alcohol use | 0.30 (0.72) | 0.37 (0.88) | 0.42 (0.92) | 0.50 (0.99) | 0.40 (0.88) | 0.45 (0.91) |
| Problem behaviour | 2.79 (0.35) | 2.80 (0.34) | 2.72 (0.40) | 2.68 (0.42) | 2.82 (0.33) | 2.77 (0.39) |
| Problem use | 2.90 (0.36) | 2.89 (0.38) | 2.88 (0.38) | 2.83 (0.45) | 2.91 (0.33) | 2.86 (0.41) |
| Lifetime tobacco use | 4.75 (9.95) | 5.64 (11.41) | 5.29 (11.44) | 6.34 (12.45) | 5.37 (11.13) | 6.33 (11.98) |
| Past month tobacco use | 1.27 (3.37) | 1.50 (3.95) | 1.61 (4.10) | 1.93 (4.58) | 1.57 (3.86) | 1.95 (4.41) |
| Lifetime marijuana use | 2.31 (7.26) | 2.55 (8.30) | 2.82 (8.51) | 3.04 (8.80) | 2.69 (8.20) | 3.14 (8.39) |
| Past month marijuana use | 0.59 (2.42) | 0.67 (2.75) | 0.98 (3.32) | 0.98 (3.19) | 0.86 (3.17) | 1.01 (3.14) |
| Lifetime inhalant use | 0.67 (4.60) | 0.82 (5.37) | 0.96 (5.97) | 0.89 (5.30) | 1.02 (6.12) | 1.14 (6.40) |
| Past month inhalant use | 0.17 (1.50) | 0.29 (2.20) | 0.47 (2.60) | 0.44 (2.52) | 0.36 (2.30) | 0.51 (2.70) |
| Lifetime illicit drug use | 0.59 (3.48) | 0.60 (3.01) | 0.71 (3.53) | 0.88 (3.67) | 1.06 (4.82) | 0.80 (3.76) |
| Past month illicit drug use | 0.15 (1.13) | 0.22 (1.37) | 0.40 (2.00) | 0.54 (2.32) | 0.39 (1.89) | 0.44 (2.07) |
| Pretest ( | Posttest ( | Follow-up ( | ||||
|---|---|---|---|---|---|---|
| Measure | Treatment | Control | Treatment | Control | Treatment | Control |
| Lifetime alcohol consumption | 5.10 (10.09) | 6.08 (11.16) | 9.66 (12.93) | 11.32 (13.83) | 7.14 (12.17) | 8.40 (13.27) |
| Past month alcohol consumption | 1.04 (2.78) | 1.23 (3.27) | 1.34 (3.03) | 1.88 (3.78) | 1.40 (3.19) | 1.93 (3.84) |
| Lifetime risky alcohol use | 3.81 (8.87) | 5.14 (11.19) | 4.32 (10.06) | 5.77 (11.84) | 4.80 (10.80) | 5.04 (10.41) |
| Past month risky alcohol use | 0.30 (0.72) | 0.37 (0.88) | 0.42 (0.92) | 0.50 (0.99) | 0.40 (0.88) | 0.45 (0.91) |
| Problem behaviour | 2.79 (0.35) | 2.80 (0.34) | 2.72 (0.40) | 2.68 (0.42) | 2.82 (0.33) | 2.77 (0.39) |
| Problem use | 2.90 (0.36) | 2.89 (0.38) | 2.88 (0.38) | 2.83 (0.45) | 2.91 (0.33) | 2.86 (0.41) |
| Lifetime tobacco use | 4.75 (9.95) | 5.64 (11.41) | 5.29 (11.44) | 6.34 (12.45) | 5.37 (11.13) | 6.33 (11.98) |
| Past month tobacco use | 1.27 (3.37) | 1.50 (3.95) | 1.61 (4.10) | 1.93 (4.58) | 1.57 (3.86) | 1.95 (4.41) |
| Lifetime marijuana use | 2.31 (7.26) | 2.55 (8.30) | 2.82 (8.51) | 3.04 (8.80) | 2.69 (8.20) | 3.14 (8.39) |
| Past month marijuana use | 0.59 (2.42) | 0.67 (2.75) | 0.98 (3.32) | 0.98 (3.19) | 0.86 (3.17) | 1.01 (3.14) |
| Lifetime inhalant use | 0.67 (4.60) | 0.82 (5.37) | 0.96 (5.97) | 0.89 (5.30) | 1.02 (6.12) | 1.14 (6.40) |
| Past month inhalant use | 0.17 (1.50) | 0.29 (2.20) | 0.47 (2.60) | 0.44 (2.52) | 0.36 (2.30) | 0.51 (2.70) |
| Lifetime illicit drug use | 0.59 (3.48) | 0.60 (3.01) | 0.71 (3.53) | 0.88 (3.67) | 1.06 (4.82) | 0.80 (3.76) |
| Past month illicit drug use | 0.15 (1.13) | 0.22 (1.37) | 0.40 (2.00) | 0.54 (2.32) | 0.39 (1.89) | 0.44 (2.07) |
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