Table 4. Prevalence ratios for poor dietary intake and related factors using Poisson’s regression analyses.

	Men (n = 2,502)		Women (n = 4,222)
	PR	95% CI	PR	95% CI
Age group, years
≥65	1.00	(reference)	1.00	(reference)
<65	1.48	(1.29–1.71)	1.55	(1.36–1.77)
Living conditions
Acceptable	1.00	(reference)	1.00	(reference)
Rather difficult	1.09	(0.93–1.27)	1.12	(0.97–1.30)
Difficult/severe	1.18	(1.00–1.39)	1.19	(1.01–1.40)
Housing
The same as before the earthquake	1.00	(reference)	1.00	(reference)
Temporary housing	1.06	(0.92–1.22)	1.11	(0.97–1.30)
Relocation and reconstruction	1.03	(0.81–1.32)	0.99	(0.78–1.25)
Family, friends and relatives home	0.80	(0.43–1.50)	0.95	(0.56–1.62)
Other	0.82	(0.51–1.31)	1.07	(0.67–1.72)
SC
Group with high SC (4–10)	1.00	(reference)	1.00	(reference)
Group with low SC (11–20)	1.06	(0.91–1.23)	1.20	(1.04–1.38)
K6
Good mental health (0–4)	1.00	(reference)	1.00	(reference)
Poor mental health (≥5)	1.14	(0.98–1.32)	1.09	(0.96–1.23)
Marital status
Married	1.00	(reference)		(reference)
Divorced	1.42	(1.05–1.93)	1.34	(1.03–1.75)
Widowed	1.49	(1.20–1.84)	1.21	(1.03–1.42)
Unmarried	1.20	(1.00–1.45)	1.49	(1.22–1.82)
Areas
Yamada	1.00	(reference)	1.00	(reference)
Otsuchi	1.04	(0.89–1.22)	0.99	(0.86–1.15)
Kamaishi	1.34	(0.92–1.95)	0.99	(0.69–1.42)
Rikuzentakata	0.58	(0.50–0.68)	0.51	(0.44–0.59)

CI, confidence interval; K6, Kessler-6; PR, prevalence ratio; SC, social capital.

Participants who fulfilled the following criteria were considered as having good dietary intake: staple food item intake ≥three times a day; meat, fish and shellfish, eggs, or soybean products ≥twice a day; vegetables ≥twice a day; and fruit or dairy products ≥once a day.

All remaining participants were categorized as having poor dietary intake.

PR were adjusted for marital status and residential areas.