Table 2 Baseline and 6-month follow-up mean values of the predictors and outcomes, along with the standard deviation (SD). Results from t-tests examining gender differences, and Cronbach’s α for scale reliability
From: Gender-specific predictors of at-risk adolescents’ hazardous alcohol use—a cohort study
Time point | Female mean (SD) | Male mean (SD) | t-value (df = 160) | p value | Cronbach’s α | |
|---|---|---|---|---|---|---|
Adolescent self-rated | ||||||
Outcomes | ||||||
Heavy episodic drinking, HED | T1 | 0.72 (0.96) | 0.60 (0.75) | 0.88 | .378 | NA |
T2 | 1.48 (1.04) | 1.23 (1.05) | 1.51 | .133 | NA | |
Risk-use of alcohol | T1 | 5.22 (6.17) | 4.21 (5.99) | 1.06 | .761 | 0.76 |
T2 | 8.54 (7.33) | 7.61 (8.03) | 0.77 | .659 | 0.83 | |
Predictors | ||||||
Age | T1 | 14.86 (1.67) | 15.31 (1.62) | −1.75 | .083 | NA |
Externalizing behavior | T1 | 22.01 (9.18) | 17.33 (8.47) | 3.63 | < .001 | 0.87 |
T2 | 21.59 (9.92) | 17.79 (10.97) | 2.31 | .022 | 0.91 | |
Internalizing behavior | T1 | 9.78 (6.27) | 6.05 (5.27) | 4.07 | < .001 | 0.88 |
T2 | 14.59 (9.35) | 9.87 (9.43) | 3.20 | .002 | 0.91 | |
SRD | T1 | 42.99 (39.89) | 38.23 (42.12) | 0.74 | .462 | 0.93 |
T2 | 44.85 (43.89) | 40.91 (55.03) | 0.51 | .613 | 0.95 | |
Y-OQ® | T1 | 60.39 (30.22) | 43.79 (28.37) | 3.59 | < .001 | 0.93 |
T2 | 54.62 (30.97) | 41.40 (32.50) | 2.65 | .009 | 0.94 | |
Drinking friends | T1 | 3.05 (1.01) | 2.60 (1.27) | 1.79 | .074 | NA |
T2 | 3.05 (1.01) | 2.73 (1.25) | 2.50 | .013 | NA | |
Delinquent friends | T1 | 11.43 (4.14) | 9.66 (4.64) | 2.57 | .011 | 0.82 |
T2 | 12.03 (4.55) | 10.78 (4.93) | 1.68 | .094 | 0.87 | |
Parent-rated | ||||||
Externalizing behavior | T1 | 21.89 (9.93) | 20.08 (8.83) | 1.21 | .226 | 0.86 |
T2 | 15.08 (11.50) | 11.74 (8.97) | 2.05 | .042 | 0.90 | |
Internalizing behavior | T1 | 14.71 (9.54) | 10.39 (7.59) | 3.17 | .002 | 0.88 |
T2 | 8.52 (8.43) | 6.29 (6.79) | 1.84 | .068 | 0.90 | |
Y-OQ® | T1 | 60.09 (32.13) | 55.23 (26.97) | 1.04 | .301 | 0.92 |
T2 | 50.94 (32.49) | 41.69 (27.40) | 1.95 | .053 | 0.94 | |