Variables

Occupation (n)

Total

P

Education (n)

Total

P

A1

A2

A3

A4

A5

B1

B2

B3

B4

Risk factors (df = 437, χ² = 91)

None

110

52

7

4

60

233

0.0001***

61

61

96

15

233

0.0002***

Hereditary

5

20

7

21

8

61

0.0001***

1

4

40

16

61

0.0001***

Use of pills

2

9

4

10

4

29

0.0001***

0

2

18

9

29

0.0001***

Alcohol/tobacco

7

28

1

16

7

59

0.0001***

0

4

43

12

59

0.0001***

Age

2

2

2

5

2

13

0.0002***

0

2

8

3

13

0.116

Obesity

2

1

1

5

0

9

0.0001***

0

2

4

3

9

0.080

Sun exposure

3

5

1

4

3

16

0.079

0

1

12

3

16

0.023*

Breastfeeding

4

6

1

10

2

23

0.0001***

0

1

17

5

23

0.001**

Parity

2

2

0

2

1

7

0.306

0

1

5

1

7

0.433

Breast massage

4

23

4

13

4

48

0.0001***

0

3

31

14

48

0.0001***

Tight bra-wearing

4

29

8

13

9

63

0.0001***

0

4

46

13

63

0.0001***

Symptoms (df = 437, χ² = 91)

None

87

19

1

1

62

170

0.0001***

53

65

52

0

170

0.0001***

Breast lump

40

77

22

34

35

208

0.0001***

9

22

134

43

208

0.0001***

Breast pain

52

60

14

23

23

172

0.0001***

15

29

100

28

172

0.0001***

Breast wound

42

22

7

13

32

116

0.289

20

28

53

15

116

0.602

Br. Appearance

27

32

10

16

23

108

0.0002***

7

16

68

17

108

0.0001***

Nipple discharge

9

25

6

9

12

61

0.0001***

3

7

42

9

61

0.0001***

Screening awareness

77

81

22

37

33

270

df = 12; χ² = 74

p < 0.0001***

25

47

154

44

270

df = 9; χ² = 91

p < 0.0001***

Screening methods (df = 8; χ² = 51.0 and df = 6; χ² = 97.7)

BSE^a

24

38

17

33

20

132

0.0001***

6

15

74

37

132

0.0001***

CBE^b

65

31

8

22

40

166

0.028*

22

39

83

22

166

0.056*

Mammography

16

33

11

25

16

101

0.0001***

4

13

56

28

101

0.0001***

Ultrasound

17

33

11

16

12

89

0.0001***

4

11

54

20

89

0.0001***