Item

Education Levels

Study Design

The 4thYear

n (%)

The 5th Year

n (%)

P Value

χ²

Pre-Intervention

n (%)

Post-Intervention

n (%)

P Value

χ²

Old age

Increases risk

Decreases risk

No effect

Don’t know

111 (83.5)

1 (0.8)

6 (4.5)

15 (11.3)

91 (92.9)

0 (0)

6 (6.1)

1 (1)

0.017

93 (77.5)

1 (0.8)

10 (8.3)

16 (13.3)

109 (98.2)

0 (0)

2 (1.8)

0 (0)

<0.001

Family history of breast cancer

Increases risk

Decreases risk

No effect

Don’t know

129 (97)

0 (0)

2 (1.5)

2 (1.5)

96 (98)

0 (0)

2 (2)

0 (0)

0.455

114 (95)

0 (0)

4 (3.3)

2 (1.7)

111 (100)

0 (0)

0 (0)

0 (0)

0.058

Cigarette smoking

Increases risk

Decreases risk

No effect

Don’t know

107 (80.5)

2 (1.5)

13 (9.8)

11 (8.3)

81 (82.7)

3 (3.1)

7 (7.1)

7 (7.1)

0.75

83 (69.2)

3 (2.5)

17 (14.2)

17 (14.2)

105 (94.6)

2 (1.8)

3 (2.7)

1 (0.9)

<0.001

Low fat diet

Increases risk

Decreases risk

No effect

Don’t know

15 (11.3)

63 (47.4)

6 (4.5)

49 (36.8)

8 (8.2)

56 (57.1)

6 (6.1)

28 (28.6)

0.38

15 (12.5)

39 (32.5)

12 (10)

54 (45)

8 (7.2)

80 (72.1)

0 (0)

23 (20.7)

<0.001

First child at late age (≥30 years)

Increases risk

Decreases risk

No effect

Don’t know

71 (53.4)

1 (0.8)

13 (9.8)

48 (36.1)

68 (69.4)

2 (2)

8 (8.2)

20 (20.4)

0.04

40 (33.3)

1 (0.8)

19 (15.8)

60 (50)

99 (89.2)

2 (1.8)

2 (1.8)

8 (7.2)

<0.001

Early onset of menses (<12 years)

Increases risk

Decreases risk

No effect

Don’t know

68 (51.1)

5 (3.8)

15 (11.3)

45 (33.8)

54 (55.1)

1 (1)

12 (12.2)

31 (31.6)

0.58

25 (20.8)

6 (5)

23 (19.2)

66 (55)

97 (87.4)

0 (0)

4 (3.6)

10 (9)

<0.001

Late menopause (>55 years)

Increases risk

Decreases risk

No effect

Don’t know

78 (58.6)

6 (4.5)

14 (10.5)

35 (26.3)

58 (59.2)

6 (6.1)

7 (7.1)

27 (27.6)

0.79

43 (35.8)

12 (10)

17 (14.2)

48 (40)

93 (83.8)

0 (0)

4 (3.6)

14 (12.6)

<0.001

Use of oral contraceptives

Increases risk

Decreases risk

No effect

Don’t know

97 (72.9)

2 (1.5)

7 (5.3)

27 (20.3)

83 (84.7)

1 (1)

3 (3.1)

11 (11.2)

0.21

70 (58.3)

3 (2.5)

9 (7.5)

38 (31.7)

110 (99.1)

0 (0)

1 (0.9)

0 (0)

<0.001

Obesity

Increases risk

Decreases risk

No effect

Don’t know

113 (85)

0 (0)

2 (1.5)

18 (13.5)

86 (87.8)

2 (2)

1 (1)

9 (9.2)

0.28

92 (76.7)

1 (0.8)

2 (1.7)

25 (20.8)

107 (96.4)

1 (0.9)

1 (0.9)

2 (1.8)

<0.001

Hormone replacement therapy

Increases risk

Decreases risk

No effect

Don’t know

97 (72.9)

1 (0.8)

2 (1.5)

33 (24.8)

77 (78.6)

4 (4.1)

1 (1)

16 (16.3)

0.16

71 (59.2)

3 (2.5)

3 (2.5)

43 (35.8)

103 (92.8)

2 (1.8)

0 (0)

6 (5.4)

<0.001

Breast feeding

Increases risk

Decreases risk

No effect

Don’t know

16 (12)

73 (54.9)

14 (10.5)

30 (22.6)

7 (7.1)

59 (60.2)

11 (11.2)

21 (21.4)

0.63

19 (15.8)

49 (40.8)

18 (15)

34 (28.3)

4 (3.6)

83 (74.8)

7 (6.3)

17 (15.3)

<0.001