Table 1 Sociodemographic characteristics, health status, cancer history of study participants (n = 3,058)

Gender

 Men

1,513

49.5

590

40.5

923

57.7

***

 Women

1,545

50.5

868

59.5

677

42.3

Age

 20-29

544

17.8

158

10.8

386

24.1

***

 30-39

632

20.7

224

15.4

408

25.5

 40-49

622

20.3

272

18.7

350

21.9

 50-59

629

20.6

363

24.9

266

16.6

 60-69

631

20.6

441

30.2

190

11.9

Marital status

 Unmarried

1,090

35.6

411

28.2

679

42.4

***

 Married

1,968

64.4

1,047

71.8

921

57.6

Education

 Less than high school graduate

814

26.6

368

25.2

446

27.9

*

 2 years college or equivalent

758

24.8

391

26.8

367

22.9

 College graduate

1,486

49.5

699

47.9

787

49.2

Employment status

 Not employed

1,451

47.4

793

54.4

658

41.1

***

 Employed

1,607

52.6

665

45.6

942

58.9

Household income

 <5,000,000 yen

1,412

46.2

647

44.4

765

47.8

**

 <10,000,00 yen

1,278

41.8

609

41.8

669

41.8

 ≥10,000,000 yen

368

12.0

202

13.9

166

10.4

Health status

 Poor

731

23.9

319

21.9

412

25.8

*

 Good

2,327

76.1

1,139

78.1

1,188

74.3

Cancer history (Self)

 No

2,934

95.9

1,354

92.9

1,580

98.8

***

 Yes

124

4.1

104

7.1

20

1.3

Cancer history (Family)

 No

1,776

58.1

699

47.9

1,077

67.3

***

 Yes

1,282

41.9

759

52.1

523

32.7

Cancer history (Friend/co-worker)

 No

1,682

55.0

587

40.3

1,095

68.4

***

 Yes

1,383

45.2

878

60.2

505

31.6