Table 6. Parameter estimates of multilevel logistic regression models for community-level collective efficacy on probable PTSD (n = 1880).
| Community-level collective efficacy models | |||||
| Variable | Full model b(SE) | Full model OR (95% CI) | Reduced model b(SE) | Reduced model OR (95% CI) | |
| Fixed effect | Intercept | −3.32 (0.14) | – | −3.26 (0.14) | – |
| Collective efficacy | −0.07 (0.03) | 0.93 (0.88–0.98) | −0.07 (0.03) | 0.93 (0.89–0.98) | |
| Sex | −0.24 (0.38) | 0.79 (0.38–1.64) | −0.25 (0.37) | 0.78 (0.38–1.62) | |
| Age | −0.02 (0.01) | 0.98 (0.96–1.01) | −0.02 (0.01) | 0.98 (0.96–1.01) | |
| Race/ethnicity | 0.40 (0.34) | 1.50 (0.77–2.91) | 0.38 (0.34) | 1.46 (0.76–2.82) | |
| Education | −0.43 (0.28) | 0.65 (0.38–1.13) | −0.43 (0.28) | 0.65 (0.38–1.12) | |
| Marital status | −0.36 (0.27) | 0.70 (0.42–1.18) | −0.33 (0.26) | 0.72 (0.43–1.21) | |
| Injury/damage | 0.83 (0.33) | 2.29 (1.19–4.39) | 0.85 (0.32) | 2.34 (1.25–4.39) | |
| Community storm damage | 0.14 (0.12) | 1.16 (0.92–1.46) | 0.14 (0.11) | 1.15 (0.92–1.43) | |
| Concentrated disadvantage | −0.14 (0.15) | 0.87 (0.65–1.17) | |||
| Immigrant concentration | 0.08 (0.14) | 1.08 (0.83–1.41) | |||
| Residential stability | 0.41 (0.18) | 1.51 (1.06–2.15) | |||
| Collective efficacy x injury | −0.12 (0.18) | – | |||
| Storm x injury | −0.02 (0.08) | – | |||
| Random effect | Between communities (τ00) | 0.51 (0.27) | 0.52 (0.26) | ||
| Median odds ratio (95% CI) | 1.95 (1.72–2.25) | 1.97 (1.73–2.28) | |||
| ICC | 0.13 | 0.14 | |||
| Model χ2 | 245.73 | 159.76 | |||
| Difference in model χ2 | 85.97** | ||||
p<0.05;
**
p<0.01.