Table 4. Logistic Regression Analysis Examining Past-Year PTSD Prevalence.
| Variable | OR (95% CI) | |
|---|---|---|
| Past-year PTSD (0 = no PTSD, 1 = PTSD)a | Current PTSD (0 = no PTSD, 1 = PTSD)b | |
| Age | 0.97 (0.96-0.97) | 0.97 (0.96-0.98 |
| Race | ||
| American Indian or Alaska Native | 0.45 (0.26-0.93) | 0.11 (0.02-0.67 |
| Asian | 0.52 (0.34-0.78) | 0.38 (0.17-0.81 |
| Black or African American | 0.77 (0.64-0.94) | 1.07 (0.82-1.39 |
| White | 1 [Reference] | 1 [Reference] |
| Otherc | 0.62 (0.47-0.83) | 0.95 (0.65-1.39) |
| Ethnicity (1 = Hispanic, 2 = non-Hispanic) | 1.43 (1.20-1.71) | 1.30 (1.01-1.68) |
| Gender (0 = male, 1 = female) | 2.32 (2.01-2.68) | 2.20 (1.77-2.73) |
| Income | 0.93 (0.88-0.98) | 0.91 (0.84-0.99) |
| Education | 1.04 (0.96-1.13) | 0.93 (0.83-1.05 |
| PTEs | ||
| No history of PTE | 1 [Reference] | 1 [Reference] |
| PSA | 4.09 (2.81-5.95) | 4.82 (2.33-10.00) |
| Other PTE | 2.61 (2.00-3.41) | 3.66 (2.05-6.53) |
| Both PSA and other PTE | 9.68 (7.48-12.52) | 16.54 (9.53-28.72) |
| Social support | 0.91 (0.90-0.93) | 0.91 (0.89-0.93) |
| Latency (mo since MVI) | 0.99 (0.99-1.00) | 1.00 (0.99-1.01) |
| Exposure to MVI (0 = no, 1 = yes) | 1.66 (1.40-1.96) | 1.82 (1.45-2.28) |
Abbreviations: MVI, mass violence incident; OR, odds ratio; PTE, potentially traumatic event; PSA, physical or sexual assault; PTSD, posttraumatic stress disorder.
a
For past-year PTSD, χ215 = 1138.89; P < .001; Nagelkerke R2 = 0.28; correct classification of 79% of cases.
b
For current PTSD, χ215 = 635.43; P < .001; Nagelkerke R2 = 0.24; correct classification of 91% of cases.
c
Other racial subcategories included participants who reported they were biracial, Jamaican, Caribbean, Taino, North African, Middle Eastern, or Jewish.