TABLE 3.
Multivariate Sociodemographic and DSM-IV/CIDI Mental Disorder Predictors of First Onset of Suicide Attempt and Suicidal Ideationa
| Attempt (n = 32) OR (95% CI) |
Ideation (n = 95) OR (95% CI) |
|
|---|---|---|
| Ethnicity | ||
| African American | 1.00 | 1.00 |
| Caribbean black | 0.22 (0.10–0.49)* | 0.84 (0.40–1.74) |
| χ21, p value | 13.69, <.001 | 0.22, .64 |
| Sex | ||
| Male | 1.00 | 1.00 |
| Female | 2.96 (1.30–6.70)* | 1.81 (0.97–3.38) |
| χ2 1, p value | 6.77, .009 | 3.42, .06 |
| Age (continuous)b | 0.75 (0.50–1.12) | 0.86 (0.73–1.02) |
| χ2 1, p value | 1.95, .16 | 2.90, .09 |
| Region | ||
| Northeast | 3.41 (1.68–6.92)* | 1.67 (1.00–2.81) |
| Midwest | 2.69 (0.81–8.96) | 1.43 (0.59–3.48) |
| West | 0.51 (0.10–2.52) | 1.36 (0.54–3.43) |
| South | 1.00 | 1.00 |
| χ2 3, p value | 15.95, .001 | 3.85, .29 |
| Yearly family income | ||
| <$18,000 | 1.05 (0.20–5.42) | 1.04 (0.51–2.14) |
| $18,000–$31,999 | 0.58 (0.11–3.00) | 0.64 (0.27–1.52) |
| $32,000–$54,999 | 2.05 (0.39–10.80) | 1.52 (0.65–3.58) |
| ≥$55,000 | 1.00 | 1.00 |
| χ2 3, p value | 10.78, .01 | 5.24, .15 |
| Prior/concurrent onset of c | ||
| Any mood disorder | 2.99 (0.68–13.19) | 2.14 (0.81–5.61) |
| χ2 1, p value | 2.08, .15 | 2.37, .12 |
| Any anxiety disorder | 2.99 (1.43–6.28)* | 3.02 (1.73–5.26)* |
| χ2 1, p value | 8.41, .004 | 15.18, <.001 |
| Any substance disorder | 1.06 (0.09–11.95) | 3.20 (1.01–10.26)* |
| χ2 1, p value | 0.003, .96 | 3.85, .05 |
| Any impulse-control disorder | 0.87 (0.27–2.84) | 1.78 (0.89–3.55) |
| χ2 1, p value | 0.05, .82 | 2.65, .10 |
| Any eating disorder | 0.73 (0.18–3.04) | 1.69 (0.37–7.78) |
| χ2 1, p value | 0.19, .67 | 0.46, .50 |
Note: Odds ratios were obtained by exponentiating the coefficients from Cox proportional hazards regression models. The 95% CIs were obtained using the Taylor series linearization method to adjust for stratification, clustering, and weighting of the data. A single model was estimated for each of the two outcomes that included all of the predictor variables. Wald χ2 values were obtained from design-based variance-covariance matrices that adjust for the stratification, clustering, and weighting of the data. CI = confidence interval; CIDI = Composite International Diagnostic Interview; OR = odds ratio.
Sample size is unweighted.
Age was entered into the models as a continuous covariate. As a result, these odds ratios represent the amounts by which the odds of suicide attempt and ideation increase multiplicatively for every 1-year increase in age.
The ORs for these five disorder category variables represent the multiplicative increase in the odds of the outcome occurring in the same year as or in a year subsequent to the onset of any one of the disorders contained in the given DSM-IV disorder category.
p < .05 by a two-sided test.