Baseline sample characteristics
| Variable | Proportion of sample (n) | |
|---|---|---|
| STS (n = 169) | Control (n = 92) | |
| STS, Start to Stop programme. | ||
| Sex | ||
| Male | 62.1% (105) | 66.3% (61) |
| Female | 37.9% (64) | 33.7% (31) |
| Race/ethnicity | ||
| African American | 11.8% (20) | 15.2% (14) |
| White | 81.7% (138) | 81.5% (75) |
| Other | 6.5% (11) | 3.3% (3) |
| Grade | ||
| 7 | 1.8% (3) | 1.1% (1) |
| 8 | 5.9% (10) | 4.3% (4) |
| 9 | 26.0% (44) | 29.3% (27) |
| 10 | 29.6% (50) | 30.4% (28) |
| 11 | 22.5% (38) | 18.5% (17) |
| 12 | 14.2% (24) | 16.3% (15) |
| Highest educational obtainment of parent/guardian | ||
| Less than high school | 12.5% (21) | 8.7% (8) |
| High school diploma or equivalent | 25.6% (43) | 28.3% (26) |
| Some college | 21.4% (36) | 17.4% (16) |
| College degree | 40.5% (68) | 45.7% (42) |