Table 1.
Participants' characteristics by PTSD status.
| Variable | Category | Total n (%) | PTSD status | χ 2 value | P value | |
|---|---|---|---|---|---|---|
| Yes n (%) | No n (%) | |||||
| Overall | 175 (100.0) | 28 (16.0) | 147 (84.0) | |||
| Gender | Female | 94 (53.7) | 20 (71.4) | 74 (50.3) | 4.207 | 0.040∗ |
| Male | 81 (46.3) | 8 (28.6) | 73 (49.7) | |||
| Age (years) | 29–59 | 103 (58.9) | 18 (64.3) | 85 (57.8) | 0.406 | 0.524 |
| ≥60 | 72 (41.1) | 10 (35.7) | 62 (42.2) | |||
| Marital status | Married | 152 (86.9) | 25 (89.3) | 127 (86.4) | 0.172 | 0.678 |
| Single/divorced/widowed | 23 (13.1) | 3 (10.7) | 20 (13.6) | |||
| Education level | ≤primary school | 103 (58.9) | 13 (46.4) | 90 (61.2) | 2.126 | 0.145 |
| >primary school | 72 (41.1) | 15 (53.6) | 57 (38.8) | |||
| Flood-related stressors | 0–2 | 101 (57.7) | 8 (28.6) | 93 (63.3) | 11.600 | 0.001∗ |
| ≥3 | 74 (42.3) | 20 (71.4) | 54 (36.7) | |||
| Postflood stressors | 0–2 | 130 (74.3) | 16 (57.1) | 114 (77.6) | 5.128 | 0.024∗ |
| ≥3 | 45 (25.7) | 12 (42.9) | 33 (22.4) | |||
| BDNF Val66Met carrier status | Val/Val | 40 (22.9) | 2 (7.1) | 38 (25.9) | 4.668 | 0.031∗ |
| Met/Met + Met/Val | 135 (77.1) | 26 (92.9) | 109 (74.1) | |||
∗ P < 0.05.