| Sample school/student characteristics | ||||||
| Non-carryover high schools | High schools that participated in original longitudinal study | Goodness of fit χ2 test | 2005 carryover high schools | 2005 dropout carryover high schools | Goodness of fit χ2 test | |
| School sample size (No of schools) | 91 | 65 | 57 | 8 | ||
| Student sample size (No of students) | 7817 | 7211 | 6301 | 910 | ||
| School grade | p=0.0700 | p=0.2323 | ||||
| 9 | 27.0% | 30.2% | 22.6% | 21.1% | ||
| 10 | 21.5% | 31.6% | 25.8% | 32.3% | ||
| 11 | 27.2% | 19.9% | 24.9% | 19.5% | ||
| 12 | 23.1% | 18.3% | 26.6% | 18.1% | ||
| Gender | p=0.6444 | p=0.9900 | ||||
| Female | 49.6% | 48.0% | 47.8% | 50.2% | ||
| Male | 50.4% | 52.0% | 52.2% | 49.8% | ||
| Ethnicity* | p=0.1533 | p=0.0544 | ||||
| American Indian | 1.0% | 0.9% | 1.0% | 0.02% | ||
| Asian | 11.0% | 11.5% | 10.8% | 20.8% | ||
| African American | 11.3% | 5.0% | 5.0% | 5.1% | ||
| Hispanic/Latino(a) | 38.2% | 35.9% | 37.6% | 13.0% | ||
| Pacific Islander/Filipino | 2.5% | 2.0% | 2.0% | 2.8% | ||
| White | 36.0% | 44.6% | 43.6% | 58.3% | ||
| Tobacco use status | ||||||
| Lifetime use | 45.8% | 39.7% | p<0.0456 | 39.7% | 40.1% | p=0.0774 |
| Current use (any smoking in 30 days) | 12.5% | 13.2% | p=0.6306 | 13.0% | 15.4% | p=0.0405 |
Source: 2003–2004 CSTS data weighted to reflect the complex survey design and corrected for differential non-response.
↵*CSTS ethnicity prevalence estimates are based on a question asking respondents to identify one ethnic category that best describes her/himself.