Table 1.
Sample description and comparisons by gender characteristic
| Total (N = 723) | Boys (n = 629) | Girls (n = 94) | Test statistica | pb | |
|---|---|---|---|---|---|
| Age (M, S.D.) | 15.5 (1.2) | 15.5 (1.3) | 15.4 (1.1) | t, −0.84 | .400 |
| Race (%) | |||||
| White | 55.3 | 53.1 | 70.2 | χ2, 12.7 | .005 |
| Black | 32.9 | 35.3 | 17.0 | ||
| Hispanic | 3.9 | 3.8 | 4.3 | ||
| Other | 7.8 | 7.6 | 8.5 | ||
| Prior location (%) | |||||
| Urban/suburban | 53.0 | 52.8 | 54.2 | χ 2, 0.07 | .790 |
| Rural/small town | 47.0 | 47.2 | 45.7 | ||
| Age at first offense (M, S.D.) | 10.5 (2.9) | 10.3 (2.9) | 11.6 (2.7) | t, 3.8 | <.001 |
| Months in custody (M, S.D.) | 7.5 (8.5) | 7.6 (8.5) | 6.6 (8.6) | t, −1.1 | .282 |
| Inhalant use (%) | |||||
| None | 67.0 | 67.4 | 63.8 | χ 2, 2.2 | .540 |
| Use only | 20.6 | 20.8 | 19.2 | ||
| Abuse, no dependence | 1.8 | 1.8 | 2.1 | ||
| Dependence | 10.7 | 10.0 | 14.9 | ||
| Suicidal ideationc (median) | 1 | 1 | 4 | z, 5.4 | <.001 |
| Suicide attempt (%) | 25.5 | 21.7 | 51.1 | χ 2, 37.2 | <.001 |
| Alcohol use (%) | |||||
| None | 13.1 | 13.8 | 8.5 | F, 9.9 | .019 |
| Low (1–10 days) | 27.3 | 28.5 | 19.2 | ||
| Medium (11–99 days) | 28.4 | 26.6 | 40.4 | ||
| High (≥100 days) | 31.3 | 31.2 | 31.9 | ||
| Other substances usedd (M, S.D.) | 3.4 (3.0) | 3.3 (3.0) | 4.0 (3.3) | t, 2.3 | .021 |
| GSI totale (M, S.D.) | 43.8 (34.8) | 42.4 (34.2) | 53.0 (37.5) | t, 2.8 | .006 |
| Traumaf | 3.0 (1.6) | 3.1 (1.7) | 2.9 (1.6) | t, 1.0 | .343 |
a
Bivariate comparisons by gender. Wilcoxin ranked sum tests reported for suicidal ideation scores.
b
Using Bonferonni’s correction for multiple comparisons, the threshold for statistical significance in this group of comparisons is .004 (.05/12).
c
Lifetime suicidal ideation measured on scale of 0–5 (MAYSI-2 subscale).
d
Sum 15 different types of substances used.
e
General severity index scores ranged from 0 to 172.
f
Trauma measured on scale of 0–5 (MAYSI-2 subscale).