Table 3

Multiple logistic regression analysis of factors influencing psychological distress and PTSD after the disaster: medical health survey to mental health survey group (n=7334)

		Model 1			Model 2			Model 3			Model 4
		OR	95% CI	P value	OR	95% CI	P value	OR	95% CI	P value	OR	95% CI	P value
Psychological distress (K6 ≥13)
Age	Per 1 SD (9.3)	1.02	0.95 to −1.10	0.567	1.05	0.97 to −1.13	0.213	1.06	0.99 to −1.15	0.111	1.09	1.01 to −1.18	0.028
Men	Women	0.61	0.50 to −0.74	<0.001	0.60	0.49 to −0.72	<0.001	0.70	0.57 to −0.85	<0.001	0.68	0.56 to −0.83	<0.001
Diabetes mellitus
A1c <7.0%	No diabetes mellitus	0.90	0.67 to −1.20	0.476	0.94	0.70 to −1.26	0.689	0.90	0.67 to −1.21	0.490	0.95	0.70 to −1.27	0.708
A1c ≥7.0%	No diabetes mellitus	1.46	1.07 to −1.99	0.017	1.48	1.08 to −2.03	0.014	1.45	1.06 to −2.00	0.022	1.45	1.06 to −2.00	0.022
Overweight (BMI ≥25)	No overweight	0.96	0.83 to −1.11	0.598	0.94	0.81 to −1.09	0.421	0.95	0.82 to −1.11	0.522	0.94	0.81 to −1.09	0.408
CKD	No CKD	1.02	0.83 to −1.26	0.847	1.06	0.86 to −1.31	0.599	1.03	0.83 to −1.27	0.826	1.06	0.85 to −1.31	0.628
Smoker
Ex-smoker	Non-smoker	0.90	0.73 to −1.13	0.366	0.91	0.73 to −1.14	0.403	0.88	0.70 to −1.10	0.258	0.89	0.71 to −1.11	0.293
Current smoker	Non-smoker	1.04	0.83 to −1.30	0.732	1.02	0.82 to −1.28	0.837	1.05	0.83 to −1.31	0.692	1.03	0.82 to −1.29	0.811
Alcohol intake
<44 g/day	Non-drinker	0.84	0.72 to −0.98	0.028	0.83	0.71 to −0.97	0.022	0.83	0.71 to −0.98	0.026	0.83	0.70 to −0.97	0.020
≥44 g/day	Non-drinker	0.99	0.76 to −1.29	0.921	0.96	0.74 to −1.26	0.783	0.93	0.71 to −1.22	0.595	0.91	0.69 to −1.20	0.502
Physical activity <4/week	Every day	1.19	0.97 to −1.46	0.103	1.19	0.97 to −1.47	0.101	1.05	0.85 to −1.30	0.642	1.06	0.85 to −1.31	0.612
Evacuation	No evacuation	1.73	1.51 to −1.98	<0.001	1.49	1.30 to −1.72	<0.001	1.52	1.33 to −1.75	<0.001	1.35	1.17 to −1.55	<0.001
Change of job	No change				2.00	1.72 to −2.33	<0.001				1.89	1.62 to −2.20	<0.001
Sleep dissatisfaction	No dissatisfaction							5.67	4.44 to −7.24	<0.001	5.47	4.28 to −6.99	<0.001
PTSD (PCL-S ≥44)
Age	Per 1 SD (9.3)	1.20	1.13 to −1.29	<0.001	1.25	1.17 to −1.33	<0.001	1.26	1.18 to −1.35	<0.001	1.30	1.21 to −1.39	<0.001
Men	Women	0.62	0.52 to −0.73	<0.001	0.60	0.51 to −0.71	<0.001	0.70	0.59 to −0.83	<0.001	0.68	0.57 to −0.81	<0.001
Diabetes mellitus
A1c <7.0%	No diabetes mellitus	0.91	0.72 to −1.16	0.455	0.96	0.76 to −1.21	0.713	0.91	0.72 to −1.16	0.442	0.95	0.75 to −1.22	0.706
A1c ≥7.0%	No diabetes mellitus	1.24	0.94 to −1.63	0.123	1.26	0.95 to −1.66	0.104	1.23	0.93 to −1.63	0.153	1.23	0.93 to −1.64	0.149
Overweight (BMI ≥25)	No overweight	1.26	1.11 to −1.42	<0.001	1.24	1.09 to −1.40	<0.001	1.26	1.12 to −1.43	<0.001	1.25	1.10 to −1.42	<0.001
CKD	No CKD	1.07	0.90 to −1.27	0.470	1.11	0.93 to −1.33	0.244	1.08	0.90 to −1.29	0.404	1.12	0.93 to −1.34	0.231
Smoker
Ex-smoker	Non-smoker	0.95	0.79 to −1.14	0.600	0.96	0.80 to −1.16	0.697	0.93	0.77 to −1.12	0.458	0.94	0.78 to −1.14	0.542
Current smoker	Non-smoker	1.11	0.91 to −1.34	0.303	1.09	0.90 to −1.32	0.377	1.12	0.92 to −1.36	0.249	1.10	0.91 to −1.34	0.330
Alcohol intake
<44 g/day	Non-drinker	0.95	0.83 to −1.09	0.472	0.95	0.83 to −1.08	0.417	0.95	0.83 to −1.09	0.443	0.94	0.82 to −1.08	0.389
≥44 g/day	Non-drinker	1.07	0.85 to −1.34	0.579	1.04	0.83 to −1.31	0.725	1.02	0.81 to −1.28	0.898	0.996	0.79 to −1.26	0.974
Physical activity <4/week	Every day	1.18	0.99 to −1.40	0.063	1.18	0.99 to −1.40	0.062	1.05	0.88 to −1.26	0.577	1.06	0.88 to −1.26	0.557
Evacuation	No evacuation	1.73	1.54 to −1.95	<0.001	1.48	1.31 to −1.68	<0.001	1.54	1.36 to −1.73	<0.001	1.34	1.18 to −1.52	<0.001
Change of job	No change				2.11	1.86 to −2.40	<0.001				2.02	1.77 to −2.30	<0.001
Sleep dissatisfaction	No dissatisfaction							4.39	3.66 to −5.26	<0.001	4.26	3.55 to −5.11	<0.001

P values are two-tailed.
Model 1: adjusted for age, sex, diabetes mellitus, overweight, CKD, smoker, alcohol intake, regular exercise, and evacuation.
Model 2: model 1 plus change of job.
Model 3: model 1 plus sleep dissatisfaction.
Model 4: model 1 plus change of job and sleep dissatisfaction.
BMI, body mass index; CKD, chronic kidney disease; K6, Kessler-6 Scale; PCL-S, PTSD Checklist-Stressor-Specific Version; PTSD, post-traumatic stress disorder.