Table 5.
Unstandardized and standardized beta weights, standard errors and proportions of variance accounted for from final hierarchical regression equations describing the relations of age 12 and age 18 predictors to age 28 heavy alcohol use (conducted separately for males and females).
|
Female
|
Male
|
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
General 28
|
Heavy 28
|
General 28
|
Heavy 28
|
|||||||||
| Final equation | B | SE | β | B | SE | β | B | SE | β | B | SE | β |
| Mother's education | 0.05 | 0.10 | 0.03 | 0.05 | 0.07 | 0.04 | 0.20 | 0.13 | 0.12 | 0.17 | 0.13 | 0.10 |
| Family conflict 12 | –0.02 | 0.16 | –0.01 | 0.00 | 0.12 | 0.00 | 0.26 | 0.20 | 0.10 | 0.16 | 0.20 | 0.07 |
| Difficulty make friends 12 | 0.08 | 0.10 | 0.05 | 0.02 | 0.07 | 0.02 | –0.02 | 0.13 | –0.02 | 0.06 | 0.13 | 0.04 |
| Aggression 12 | 0.01 | 0.08 | 0.01 | 0.01 | 0.06 | 0.01 | –0.06 | 0.08 | –0.07 | –0.04 | 0.08 | –0.04 |
| Social ability 12 | –0.05 | 0.18 | –0.02 | 0.12 | 0.13 | 0.06 | –0.46* | 0.22 | –0.16 | –0.35 | 0.23 | –0.12 |
| GPA 12 | 0.00 | 0.06 | 0.00 | –0.02 | 0.05 | –0.03 | 0.15* | 0.07 | 0.19 | 0.13 | 0.07 | 0.15 |
| Skipping school 12 | 0.00 | 0.07 | 0.00 | 0.02 | 0.05 | 0.03 | 0.05 | 0.07 | 0.06 | 0.01 | 0.07 | 0.01 |
| College plan 12 | 0.20 | 0.27 | 0.04 | –0.15 | 0.19 | –0.04 | –0.05 | 0.34 | –0.01 | –0.18 | 0.34 | –0.04 |
| Time spent with friends 12 | 0.13 | 0.09 | 0.09 | 0.11 | 0.06 | 0.10 | 0.19 | 0.12 | 0.12 | |||
| Family conflict 18 | –0.26* | 0.11 | –0.13 | –0.22* | 0.08 | –0.15 | 0.18 | 0.15 | 0.09 | 0.12 | 0.15 | 0.06 |
| Difficult making friends 18 | 0.11 | 0.12 | 0.07 | 0.07 | 0.08 | 0.06 | –0.17 | 0.14 | –0.12 | –0.28* | 0.14 | –0.19 |
| Other problem behavior 18 | 0.35 | 0.33 | 0.06 | 0.42 | 0.24 | 0.11 | –0.24 | 0.20 | –0.11 | –0.01 | 0.20 | –0.00 |
| Social ability 18 | 0.13 | 0.12 | 0.08 | 0.06 | 0.09 | 0.04 | –0.05 | 0.16 | –0.03 | –0.07 | 0.14 | –0.05 |
| GPA18 | 0.38* | 0.19 | 0.15 | 0.18 | 0.13 | 0.10 | 0.20 | 0.23 | 0.08 | –0.28 | 0.23 | –0.11 |
| Skipping school 18 | –0.03 | 0.08 | –0.02 | 0.02 | 0.06 | 0.02 | 0.10 | 0.10 | 0.09 | 0.00 | 0.10 | 0.00 |
| College plan 18 | –0.02 | 0.07 | –0.02 | 0.08 | 0.05 | 0.10 | 0.05 | 0.09 | 0.04 | 0.09 | 0.09 | 0.08 |
| Other drug use 18 | 0.07 | 0.21 | 0.02 | 0.16 | 0.16 | 0.07 | 0.02 | 0.18 | 0.01 | –0.05 | 0.18 | –0.03 |
| Sport activity 18 | 0.12 | 0.07 | 0.10 | |||||||||
| Importance making friends 18 | 0.51* | 0.17 | 0.36 | |||||||||
| Important of popularity 18 | –0.62 | 0.20 | –0.39 | |||||||||
| Peer focus 18 | 0.39* | 0.15 | 0.21 | |||||||||
| Alcohol use 18 | 0.19* | 0.09 | 0.15 | 0.22* | 0.07 | 0.22 | 0.33* | 0.11 | 0.30 | 0.54* | 0.11 | 0.47 |
| R2 = | 0.22 | 0.18 | 0.34 | 0.32 | ||||||||
12 = age 12; 18 = age 18; B = unstandardized regression coefficient; SE = standard error of B; β = standardized regression coefficient; R2 = proportion of variance accounted for by the model. GPA: grade point average
*
P < 0.05.