Table 3.
Logistic regression analyses of the effects of participants' characteristics and BDNF Val66Met polymorphism on PTSD status.
| Variable | Category | Univariable analyses | Multivariable analyses | ||
|---|---|---|---|---|---|
| OR (95% CI) | P value | aOR (95% CI) | P value | ||
| Gender | Male | 1 | 1 | ||
| Female | 2.47 (1.02–5.95) | 0.045∗ | 2.90 (1.04–8.08) | 0.042∗ | |
| Age (years) | 29–59 | 1 | 1 | ||
| ≥60 | 0.76 (0.33–1.76) | 0.525 | 1.32 (0.44–3.94) | 0.615 | |
| Marital status | Married | 1 | 1 | ||
| Single/divorced/widowed | 0.762 (0.21–2.76) | 0.679 | 0.44 (0.10–1.88) | 0.264 | |
| Education level | >primary school | 1 | 1 | ||
| ≤primary school | 0.549 (0.24–1.24) | 0.148 | 0.51 (0.19–1.36) | 0.177 | |
| Flood-related stressors | 0–2 | 1 | 1 | ||
| ≥3 | 4.31 (1.78–10.44) | 0.001∗ | 5.83 (2.18–15.59) | <0.001∗ | |
| Postflood stressors | 0–2 | 1 | 1 | ||
| ≥3 | 2.59 (1.12–6.02) | 0.027∗ | 2.85 (1.02–7.94) | 0.045∗ | |
| BDNF Val66Met carrier status | Val/Val | 1 | 1 | ||
| Met/Met + Met/Val | 4.53 (1.03–20.01) | 0.046∗ | 4.76 (1.02–22.15) | 0.047∗ | |
∗ P < 0.05.