Table 2.

Commuting location and the decreased self-perceived health.

	JMA-SI (level) a	Radi (µSv/h)	Quake (times)	Decreased (n)	Not decreased (n)	Decreased (%)	P value
Miyagi	7	0.111b	2841	28	93	23.1	.002d
Fukushima	6	2.5c	4211	26	44	37	<.001e
Tochigi	6	0.154	1552	11	43	20	.09
Iwate	6	0.027	2304	9	40	18	.19
Ibaraki	6	0.176	3422	16	78	17	.20
Aomori	5	0.02	818	8	36	18	.25
Tokyo	5	0.048	691	232	1643	12.37	Reference
Chiba	5	0.033	1526	22	176	10.9	.73
Akita	5	0.034	644	3	26	10	1.00
Saitama	5	0.057	946	21	187	10.1	.37
Nagano	5	0.069	868	8	73	10	.60
Kanagawa	5	0.049	435	40	387	9.4	.09
Yamagata	5	0.04	862	3	33	8	.61
Gunma	5	0.08	939	6	75	7	.22
Niigata	5	0.047	817	6	82	7	.13
Yamanashi	5	0.044	262	2	30	7	.42
Gifu	4	0.062	212	9	106	7.8	.18
Hokkaido	4	0.027	395	17	229	6.9	.01f
Shizuoka	4	0.037	371	11	172	6.0	.008d
Aichi	4	0.041	79	19	533	3.4	<.001e
Toyama	3	0.047	77	8	50	14	.69
Shiga	3	0.034	57	7	56	11	1.00
Nara	3	0.048	42	5	61	8	.34
Fukui	3	0.045	54	3	47	6	.27
Hyogo	3	0.037	47	18	290	5.8	<.001e
Kyoto	3	0.039	43	12	208	5.5	.002d
Mie	3	0.046	38	5	87	5	.048f
Osaka	3	0.043	43	31	693	4.3	<.001e
Ishikawa	3	0.046	88	2	52	4	.056
Shimane	2	0.036	38	3	31	9	.79
Wakayama	2	0.032	92	4	45	8	.51
Okayama	2	0.049	31	5	109	4.4	.007d
Totori	2	0.063	21	0	28	0	.04f
Tokushima	2	0.039	29	0	41	0	.007d
Kochi	1	0.026	33	4	26	13	.78
Kagawa	1	0.053	21	3	40	7	.36
Nagasaki	1	0.029	21	3	40	7	.36
Fukuoka	1	0.037	25	14	224	5.8	.002d
Oita	1	0.05	39	2	39	5	.22
Hiroshima	1	0.05	52	7	147	4.5	.002d
Kumamoto	1	0.027	75	2	49	4	.08
Kagoshima	1	0.035	130	1	41	2	.053
Ehime	1	0.047	28	1	60	2	.007d
Saga	1	0.04	12	0	19	0	.16
Okinawa	0	0.021	56	5	29	15	.60
Miyazaki	0	0.027	44	3	24	11	1.00
Yamaguchi	0	0.094	21	4	61	6	.17

^aJMA-SI, Japan Meteorological Agency seismic intensity; Radi, radiation dose on March 20, 2011 (µSv/h); Quakes, total number of aftershocks from March 11, 2011 to January 31, 2012.

^bObtained initially at 19:00 on March 29, 2011.

^cObtained initially at 13:00 on April 6, 2011.

^dMean < .01.

^eMean <.001.

^fMean < .05.