Table 3.
Regression models to examine the potential differences in odds for detection of Cs-137 and Cs-134 after April 2013 between those who participated in the WBC monitoring and those who did not before April.
| Variables | Cs-137 after April 2013 | Cs-134 after April 2013 |
|---|---|---|
| Whole body counter (WBC) monitoring participation before April 2013 | ||
| No | 1.28 (0.92–1.77) | 1.69 (1.00–2.84) |
| Yes | 1.00 | 1.00 |
| Age group (year) | ||
| 21–30 | 0.21 (0.05–0.89) * | NA |
| 31–40 | 0.30 (0.12–0.76) * | 0.32 (0.07–1.39) |
| 41–50 | 0.36 (0.16–0.81) * | 0.14 (0.02–1.02) |
| 51–60 | 0.42 (0.23–0.77) ** | 0.23 (0.07–0.77) * |
| 61–70 | 1.00 | 1.00 |
| 71–80 | 1.49 (1.01–2.21) * | 1.37 (0.76–2.47) |
| 81– | 0.93 (0.46–1.87) | 0.68 (0.22–2.08) |
| Sex | ||
| Men | 1.00 | 1.00 |
| Women | 0.25 (0.15–0.42) *** | 0.22 (0.10–0.50) *** |
| Height at WBC measurement | 0.98 (0.95–1.01) | 0.96 (0.91–1.01) |
| Weight at WBC measurement | 1.01 (0.99–1.02) | 1.02 (0.99–1.05) |
| Post-incident actual lived-at address | ||
| Inside Minamisoma City | 1.00 | 1.00 |
| Outside Minamisoma City but inside Fukushima Prefecture | 0.60 (0.28–1.32) | NA |
| Neighboring prefectures of Fukushima | 0.19 (0.03–1.36) | NA |
| Outside the neighboring prefectures | NA | NA |
| Air dose rate (μSv/h) as of 29 April 2011 at pre-incident residential address | 1.23 (1.13–1.33) *** | 1.23 (1.11–1.36) *** |
Note: * p < 0.05; ** p < 0.01; *** p < 0.001. Variables in the tables were mutually adjusted. Pre-incident residential address was also adjusted as a random effect. NA indicates no detected individuals.