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Table 5 Comparison of categorical predictors of breast cancer among postmenopausal women in Nigeria, 1998–2000

From: Waist–hip ratio and breast cancer risk in urbanized Nigerian women

Predictor

Cases

Controls

Odds ratio

95% confidence interval

P value

Waist–hip ratio

     

   ≤ 0.77

16 (15.4)

21 (23.6)

1.00

  

   >0.77 to ≤ 0.85

40 (38.5)

40 (44.9)

1.52

0.67–3.42

0.31

   >0.85

48 (46.15)

28 (31.5)

2.79

1.21–6.45

0.02

Family history of breast cancer

     

   Yes

7 (6.73)

8 (8.99)

0.70

0.23–2.09

0.52

   No

97 (93.27)

81 (91.01)

   

Obesity

     

   Yes

31 (29.81)

16 (17.98)

2.01

0.99–4.09

0.05

   No

73 (70.19)

73 (82.02)

   

Having ever breastfed

     

   Yes

101 (97.12)

89 (100)

a

a

a

   No

3 (2.88)

0 (0)

   

Use of contraceptive pill

     

   Yes

34 (34)

25 (28.09)

0.96

0.50–1.84

0.90

   No

66 (66)

64 (71.91)

   

Social status

     

   Low

49 (47.12)

57 (64.77)

1.00

0.97–3.19

0.06

   Middle

47 (45.19)

31 (35.23)

1.79

  

   High

8 (7.69)

0

a

a

 
  1. Data presented as number (%), age-adjusted odds ratio, 95% confidence interval, and P value for cases and controls. a Values could not be computed because of zero-cell.