Table 1.
Sample characteristics by racial/ethnic group for alcohol and drug usersa from Wave I (1994-1995) and Wave II (1996) of the Add Health study
| Alcohol users | Drug users | |||||
|---|---|---|---|---|---|---|
| Aggregate sample (n=4,894) | Mexican heritage sample (n=619) | White sample (n=4,275) | Aggregate sample (n=2,875) | Mexican heritage sample (n=414) | White sample (n=2,461) | |
| Variable | %/Mean (Standard Deviation) | %/Mean (Standard Deviation) | ||||
| Female | 52% | 48% | 52% | 51% | 48% | 52% |
| Single-parent household | 57%† | 62% | 56% | 53% | 56% | 52% |
| Parent’s education | ||||||
| Completed HS | 31%† | 27% | 32% | 31% | 30% | 32% |
| More than HS | 56%† | 30% | 60% | 56%† | 31% | 60% |
| Spanish spoken at home | -- | 41% | -- | -- | 36% | -- |
| US-born | -- | 69% | -- | -- | 72% | -- |
| Ever used alcohol/drugb | 24%† | 35% | 40% | 14% | 23% | 23% |
| Reported alcohol/drug-related problem | 48% | 48% | 48% | 31%† | 26% | 31% |
| Age | 15.44 (1.54)* | 15.73 (1.57) | 15.40 (1.53) | 15.52 (1.51)* | 15.70 (1.57) | 15.48 (1.49) |
| GPA | 2.73 (0.78)* | 2.50 (0.78) | 2.77 (0.77) | 2.59 (0.78)* | 2.34 (0.76) | 2.63 (0.77) |
| Parental control | 1.74 (1.45)* | 2.08 (1.63) | 1.69 (1.42) | 1.68 (1.46)* | 1.99 (1.62) | 1.62 (1.43) |
| Parent-child Attachment | 4.16 (0.80) | 4.13 (0.84) | 4.17 (0.79) | 4.06 (0.85) | 4.10 (0.89) | 4.06 (0.84) |
| Family cohesion | 3.91 (0.65) | 3.94 (0.69) | 3.91 (0.65) | 3.80 (0.68)* | 3.87 (0.71) | 3.79 (0.67) |
a
All independent and control variables measured at Wave I; alcohol- and drug related problems measured at Wave II.
b
Proportion of alcohol/drug users relative to ethnic group in entire ADD Health study
*
t < .05;
†
Pearson chi-square < .05