One member of the family had breast cancer

0.001

Yes

58

55.2

64

30.5

2.7 (1.7 - 4.4)

No

47

44.8

146

69.5

1 (reference)

If yes, degree of relation

0.008

First degree

31

81.6

42

58.3

3.8 (1.4 - 10.3)

Second degree

7

18.4

30

41.7

1 (reference)

2) Life style

Smoker

0.490

Yes

2

1.9

7

3.3

1.7 (0.4 - 8.6)

No

103

98.1

203

96.7

1 (reference)

Expose to secondhand smoke

0.061

Yes

54

51.4

86

41.0

1.6 (1 - 2.5)

No

51

48.6

124

59.0

1 (reference)

Daily walking (minute)

0.013

<20

16

20.3

33

23.2

0.6 (0.3 - 1.2)

0.117

20 - 40

19

24.1

58

40.8

0.4 (0.2 - 0.7)

0.004

>41

44

55.7

51

35.9

1 (reference)

Sleeping hours

0.156

<6

14

13.3

12

7.8

2.4 (1.0 - 6.2)

0.060

6 - 8

70

66.7

97

63.4

1.5 (0.8 - 2.7)

0.207

>8

21

20.0

44

28.8

1 (reference)

Monthly breast self-exam

0.220

Yes

17

16.2

24

11.4

1.5 (0.8 - 3)

No

88

83.8

186

88.6

1 (reference)