Table 1

Background of study subjects

item

category

number

%


Gender

Male

1,310

62.2

Female

792

37.6

Age when the earthquake occurred (years)

-29

34

1.6

30–39

184

8.7

40–49

304

14.4

50–64

805

38.2

65–79

693

32.9

80-

87

4.1

Place of residence when the earthquake occurred

Nagaoka City

794

37.7

Ojiya City

395

18.7

Mitusuke City

249

11.8

Tohkamachi City

334

15.9

Kawaguchi Town

85

4.0

Koshiji Town

115

5.5

Yamakoshi Village

115

5.5

Employment

Farmer

256

12.1

Other self-employed individuals

238

11.3

Office worker

643

30.5

Part-time worker

143

6.8

Housewife

278

13.2

Student

1

0.0

None

462

21.9

Total

2,107


Toyabe et al. BMC Public Health 2007 7:175   doi:10.1186/1471-2458-7-175

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