From: Selective attrition and bias in a longitudinal health survey among survivors of a disaster
 | Respondents at wave 1 only (N = 118) | Respondents at waves 1 & 2 (N = 75) | Respondents at waves 1 & 3 (N = 73) | Respondents at waves 1, 2, 3 (N = 86) | p value |
---|---|---|---|---|---|
 | % (95% CI) | % (95% CI) | % (95% CI) | % (95% CI) |  |
Male | 53.4 (44.3–62.4) | 48.0 (36.5–59.3) | 45.2 (33.6–56.6) | 45.4 (34.7–55.9) | 0.6 |
Age | Â | Â | Â | Â | Â |
   18 – 24 | 20.5 (13.1–27.8) | 12.2 (4.7–19.6) | 17.8 (8.9–26.6) | 8.1 (2.2–13.9) | 0.03 |
   25 – 44 | 55.6 (46.5–64.6) | 43.2 (31.8–54.4) | 57.5 (46.0–68.8) | 60.5 (50.0–70.8) |  |
   45 – 64 | 22.2 (14.6–29.7) | 40.5 (29.2–51.6) | 21.9 (12.3–31.4) | 31.4 (21.4–41.2) |  |
   65+ | 1.7 (0.0–4.0) | 4.1 (0.0–8.6) | 2.7 (0.0–6.4) | 0.0 |  |
Age, Mean | 35.9 (33.5–38.4) | 41.1 (37.9–44.2) | 36.4 (33.4–39.4) | 38.5 (36.1–40.8) | 0.04 |
Education | Â | Â | Â | Â | Â |
   Primary school | 39.8 (30.9–48.6) | 52.1 (40.6–63.4) | 43.1 (31.6–54.5) | 38.3 (27.9–48.6) | 0.8 |
   Junior high | 23.9 (16.1–31.6) | 21.1 (11.7–30.3) | 23.5 (13.6–33.2) | 22.2 (13.3–31.0) |  |
   Senior high/professional | 29.2 (20.9–37.4) | 22.5 (12.9–32.0) | 23.6 (13.7–33.3) | 29.6 (19.8–39.3) |  |
   High professional/university | 7.1 (2.4–11.7) | 4.2 (0.0–8.7) | 9.7 (2.8–16.5) | 9.9 (3.5–16.2) |  |
Paid job | 41.4 (32.4–50.3) | 40.6 (29.3–51.7) | 46.0 (34.4–57.4) | 39.2 (28.7–49.5) | 0.9 |
Single | 23.3 (15.6–30.9) | 15.3 (7.0–23.5) | 17.1 (8.3–25.7) | 12.9 (5.7–20.0) | 0.3 |