Skip to main content

Table 5 Parental age distributions and odds ratios for breast cancer among African-American and white women combined

From: Birthweight, parental age, birth order and breast cancer risk in African-American and white women: a population-based case–control study

 

Minimally adjusted ORa

Fully adjusted ORb

 

Case

Control

OR

95% CI

Case

Control

OR

95% CI

Maternal age (years)c

n = 280

n = 236

  

n = 263

n = 235

  

   15–18

31

31

1.8

0.9–3.4

30

29

1.8

0.9–3.5

   19–22 (ref.)

51

80

Ref.

 

48

77

Ref.

 

   23–27

87

49

3.0

1.8–5.0

85

48

3.5

2.0–5.9

   28–44

111

77

2.5

1.6–4.0

100

81

3.0

1.8–5.2

   Mean ± SD

26.5 ± 6.5

25.2 ± 6.7

      

   Median

26

23

      

   Range

17–43

15–43

      

Paternal age (years)d

n = 266

n = 218

  

n = 251

n = 206

  

   15–22

39

35

1.0

0.6–1.8

38

33

1.6

0.8–3.1

   23–27 (refs)

73

70

Ref

 

69

65

Ref

 

   28–34

87

67

1.3

0.8–2.1

83

62

1.2

0.7–2.2

   35–56

67

46

1.6

0.9–2.6

61

46

1.5

0.7–3.2

   Mean ± SD

30 ± 7.1)

29.5 ± 7.5)

      

   Median

29

28

      

   Range

17–53

15–56

      
  1. aAdjusted for age, race, and sampling fractions. bAdjusted for age, race, sampling fractions, and other covariates as specified. cAdditional covariates for fully adjusted OR: household income ≥$30,000 and birth order.dAdditional covariates for fully adjusted OR: adult body mass index >25 kg/m2, household income ≥$30,000, birth order, and maternal age.
Back to article page

Breast Cancer Research

ISSN: 1465-542X

Contact us