Table 3.

The association between radiation risk perceptions at the first survey and posttraumatic stress symptoms at the second survey with adjusting for posttraumatic stress symptoms at the first survey (n = 1,148).

	Model 1			Model 2
	OR	95%CI		OR	95%CI
Residential area (ref. Western area)
Eastern coastal area (Hama-dori)	2.02	0.59	6.97	2.06	0.55	7.77
Central area (Naka-dori)	2.53	1.10	5.81	2.40	1.00	5.76
Age (ref. 65+)
20–39 years old	1.23	0.42	3.59	1.44	0.47	4.47
40–64 years old	1.29	0.50	3.35	1.46	0.53	4.00
Sex (women)	0.90	0.49	1.64	0.74	0.39	1.42
Educational attainment (ref. University or graduate school)
Junior high school	1.74	0.50	6.07	1.59	0.43	5.83
High school	1.26	0.48	3.29	0.97	0.36	2.63
Junior or technical college	1.11	0.37	3.31	1.07	0.36	3.20
Level of household income adjusted by household size (ref. High)
Low	2.66	0.72	9.80	2.55	0.66	9.84
Middle	2.72	0.75	9.79	2.52	0.68	9.34
Marital status (Married)	0.82	0.40	1.66	1.00	0.47	2.13
Living alone	1.08	0.37	3.19	0.83	0.26	2.68
Living arrangement (One's own house)	0.79	0.35	1.78	0.75	0.32	1.72
Physical disease under treatment	1.32	0.61	2.87	1.32	0.58	3.02
Disaster-related experiences (ref. none)
Direct damage a)
1	0.69	0.34	1.40	0.51	0.23	1.11
2+	1.39	0.57	3.34	0.59	0.21	1.63
Disaster-related family problems b)
1+	2.49	1.18	5.27	1.60	0.70	3.64
Social network
Family and friends (LSNS-6 c))	0.96	0.91	1.01	0.97	0.92	1.02
Belonging to some groups	0.69	0.35	1.37	0.82	0.39	1.74
Radiation risk perceptions [T1]	1.25	1.16	1.34	1.19	1.10	1.29
Posttraumatic stress symptoms [T1]				1.23	1.15	1.31

OR: odds ratio; CI: confidence interval; ref.: reference; T1: at the first survey, i.e., 5 years after the accident; T2: at the second survey, i.e., about 7 years after the accident or 21 months after the first survey.

^aNo. of direct damage incidents experienced in any of the following: 1. Harm to oneself, 2. Harm or death of family members, 3. Loss of job or temporary absence from work, or 4. Loss of house or property.

^bNo. of family problems experienced in any of the following: 1. Deterioration of family relationships, or 2. Family separation.

^cLubben Social Network Scale - 6.