Table 1.
Means or Percentages of Predictor Variables Among Adolescents and Parents ( N = 908)
| Predictors | Mean ( SD ) | % |
|---|---|---|
| Adolescent factors (W5) | ||
| Demographics | ||
| Age (in years) | 16.6 (1.3) | |
| Female | 54.9 | |
| Race/ethnicity | ||
| White | 25.5 | |
| Black | 33.6 | |
| Hispanic | 40.9 | |
| Smoking/ DSM-IV nicotine dependence last 12 months | ||
| Did not smoke | 57.6 | |
| Smoked, not nicotine dependent | 29.0 | |
| Smoked, nicotine dependent | 13.4 | |
| Number of cigarettes smoked last 12 months (among users) a | 3.9 (2.7) | |
| Other substance use | ||
| Alcohol use last 12 months | 49.8 | |
| Number of alcohol drinks consumed last 12 months (among users) a | 2.5 (1.7) | |
| Marijuana use last 12 months | 31.0 | |
| Number of marijuana joints smoked last 12 months (among users) a | 2.9 (2.3) | |
| Physical health | ||
| Frequency physical health symptoms last 12 months | 5.1 (8.3) | |
| Body mass index | 23.8 (4.9) | |
| Mental Health | ||
| Depressive disorder last 12 months | 3.5 | |
| Anxiety disorder last 12 months | 6.3 | |
| Disruptive disorder last 12 months | 13.1 | |
| Parental factors (W1–W5) | ||
| Education—highest level lifetime (by W1) | ||
| Less than high school | 22.0 | |
| High school | 22.7 | |
| Some college or more | 55.3 | |
| Smoking/ DSM-IV nicotine dependence lifetime (by W5) | ||
| Never smoked | 29.8 | |
| Smoked, never nicotine dependent | 42.0 | |
| Smoked, nicotine dependent | 28.2 | |
| Number of health conditions last 12 months (W1–W5) | 1.6 (1.6) | |
| Depressive disorder lifetime (by W5) | 15.8 | |
DSM-IV = Diagnostic and Statistical Manual of Mental Disorders. Weighted estimates, unweighted N .
a Log-transformed values.