Table 1.
Demographic Characteristics and Reported Substance Use by Sample
| Teen Survey (Age 11–15) | Add Health
|
||
|---|---|---|---|
| Younger (Age 12–14) | Older (Age 15–20) | ||
| N | 163 | 397 | 1797 |
| Gender: | |||
| Female | 79 (48.5%) | 231 (58.2%) | 917 (51.0%) |
| Ethnicity a: | |||
| White | 107 (65.6%) | 312 (78.6%) | 1066 (59.3%) |
| Latino | 27 (16.6%) | 22 (5.5%) | 353 (19.6%) |
| African-American | 7 (4.3%) | 73 (18.4%) | 207 (11.5%) |
| Asian | 5 (3.0%) | 5 (1.3%) | 356 (19.8%) |
| Other | 17 (10.4%) | 6 (1.5%) | 58 (3.2%) |
| Substance Use (% of participants that report use) | |||
| Tobacco | 43 (26.4%) | 53 (15.9%) | 514 (28.6%) |
| Alcohol | 42 (25.8%) | 106 (26.8%) | 954 (53.1%) |
| Marijuana | 14 (8.6%) | 7 (1.8%) | 289 (16.2%) |
Notes: Time frames for reports of substance use varied by study. Teen Survey participants were asked about the past six months, and Add-Heallth participants were asked about the number of days in the past 30 they used the substance in question.
a
Ethnicity frequencies sum to more than the total and percentages sum to more than 100% because respondents in Add-Health were permitted to select multiple categories to describe ethnicity.