TABLE 3—
Multivariate Analysis Results for Predictors of Self-Harm in New York City Jails, With Interactions: January 1, 2010–January 31, 2013
| Variables | OR (95% CI) |
| Self-harm | |
| Solitary confinement and not SMI and aged > 18 y | 10.15 (8.53, 12.08) |
| Solitary confinement and not SMI and aged ≤ 18 y | 5.89 (4.80, 7.20) |
| Solitary confinement and SMI and aged > 18 y | 4.03 (3.10, 5.24) |
| Solitary confinement and SMI and aged ≤ 18 y | 2.34 (1.65, 3.31) |
| SMI and solitary confinement | 4.71 (3.72, 5.97) |
| SMI and not solitary confinement | 11.68 (9.78, 14.40) |
| Aged ≤ 18 y and solitary confinement | 5.73 (4.85, 6.77) |
| Aged ≤ 18 y and no solitary confinement | 9.88 (8.21, 11.89) |
| Length of stay (6 mo) | 1.40 (1.36, 1.46) |
| Hispanic vs Black | 1.43 (1.27, 1.61) |
| White vs Black | 1.84 (1.49, 2.28) |
| Potentially fatal self-harm | |
| Solitary confinement and not SMI and aged > 18 y | 6.16 (3.47, 10.96) |
| Solitary confinement and SMI and aged > 18 y | 9.06 (4.03, 20.40) |
| SMI and solitary confinement | 9.80 (5.02, 19.18) |
| SMI and not solitary confinement | 6.67 (3.30, 13.50) |
| Length of stay (6 mo) | 1.46 (1.30, 1.63) |
| Hispanic vs Black | 3.08 (1.92, 4.95) |
| White vs Black | 4.96 (2.66, 9.26) |
Note. CI = confidence interval; OR = odds ratio; SMI = serious mental illness. All variables were significant at P < .001.