Table 3. Results showing the proportion of non-examinees for the confirmatory testing based on two logistic regression models using areas based on (i) exposure to radiation and (ii) the administrative districts.

Multivariate logistic regression model for Area (i)
	Adjusted OR	(95% CI)	P
Intercept:	0.04		<0.001
Sex:
boys	1.00		Ref.
girls	0.95	(0.70, 1.31)	0.772
Age:
0–5	1.00		Ref.
6–10	2.05	(0.70, 6.04)	0.192
11–15	1.74	(0.62, 4.90)	0.295
16–	2.88	(1.03, 8.05)	0.043
Moving:
staying (S)	1.00		Ref.
moved (M)	1.29	(0.88, 1.90)	0.192
unknown (U)	2.49	(1.34, 4.62)	0.004
Area:
Middle (A1)	1.00		Ref.
Lowest (A2)	1.04	(0.76, 1.42)	0.826
Highest (A3)	0.54	(0.12, 2.37)	0.417

Multivariate logistic regression model for Area (ii)
	Adjusted OR	(95% CI)	P
Intercept:	0.03		<0.001
Sex:
boys	1.00		Ref.
girls	0.94	(0.68, 1.28)	0.686
Age:
0–5	1.00		Ref.
6–10	1.96	(0.66, 5.79)	0.222
11–15	1.74	(0.62, 4.91)	0.295
16–	3.03	(1.08, 8.47)	0.035
Moving:
staying (S)	1.00		Ref.
moved (M)	1.24	(0.83, 1.84)	0.290
unknown (U)	2.43	(1.30, 4.52)	0.005
Area:
Ken-poku (B1)	1.00		Ref.
Ken-chu (B2)	1.74	(1.11, 2.74)	0.016
Ken-nan (B3)	1.84	(0.97, 3.50)	0.063
Aizu (B4)	1.83	(1.07, 3.13)	0.028
Minami-aizu (B5)	2.78	(0.98, 7.82)	0.054
Sou-sou (B6)	1.31	(0.68, 2.52)	0.426
Iwaki (B7)	1.14	(0.67, 1.93)	0.635

CI, confidence interval; OR, odds ratio.