Table 1.

Background of respondents

	Respondents		National population [14]
Variable	Number	Percentage	Percentage
Gender
Male	19,462	52.2	48.7
Female	17,856	47.9	51.3
Agea
–19	756	2.0	2.5
20–29	5102	13.7	12.9
30–39	6481	17.4	16.2
40–49	7642	20.5	19.1
50–59	6417	17.2	16.0
60–69	6995	18.7	18.8
70–	3925	10.5	14.5
Prefecture
Hokkaido	1598	4.3	4.2
Aomori	350	0.9	1.0
Iwate	338	0.9	1.0
Miyagi	801	2.2	1.8
Akita	288	0.8	0.8
Yamagata	267	0.7	0.9
Fukushima	428	1.2	1.5
Ibaraki	667	1.8	2.3
Tochigi	386	1.0	1.6
Gunma	357	1.0	1.6
Saitama	2095	5.6	5.7
Chiba	1809	4.9	4.9
Tokyo	5013	13.4	10.6
Kanagawa	3061	8.2	7.2
Niigata	618	1.7	1.8
Toyama	281	0.8	0.8
Ishikawa	332	0.9	0.9
Fukui	188	0.5	0.6
Yamanashi	169	0.5	0.7
Nagano	537	1.4	1.7
Gifu	561	1.5	1.6
Shizuoka	977	2.6	2.9
Aichi	2432	6.5	5.9
Mie	414	1.1	1.4
Shiga	345	0.9	1.1
Kyoto	815	2.2	2.1
Osaka	2827	7.6	7.0
Hyogo	1661	4.5	4.4
Nara	470	1.3	1.1
Wakayama	227	0.6	0.8
Tottori	142	0.4	0.5
Shimane	149	0.4	0.5
Okayama	592	1.6	1.5
Hiroshima	871	2.3	2.2
Yamaguchi	304	0.8	1.1
Tokushima	212	0.6	0.6
Kagawa	276	0.7	0.8
Ehime	388	1.0	1.1
Kochi	153	0.4	0.6
Fukuoka	1872	5.0	4.0
Saga	193	0.5	0.7
Nagasaki	376	1.0	1.1
Kumamoto	399	1.0	1.4
Oita	249	0.7	0.9
Miyazaki	221	0.6	0.9
Kagoshima	318	0.9	1.3
Okinawa	291	0.8	1.1
Highest educational level [13]
High school	13,591	36.4	37.5
Universityb	17,223	46.2	16.1
Marital status
Married	21,394	57.3	58.5
Divorced	2666	7.1	5.2
Widowed	865	2.3	8.9
Never married	12,258	32.9	27.3

^aDenominator of national population was the number of population aged 18 and above

^bIncludes graduate schools