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Table 2 Multivariate conditional logistic regression analysis for the average intervals between 1st and 5th birth as predictors of breast cancer, ductal breast cancer (< 50 years and 50+ years) and lobular breast cancer (50+ years) risk among multiparous women in Finland. Reference: Average interval < 2 years

From: The effect of length of birth interval on the risk of breast cancer by subtype in grand multiparous women

 

Average interval between 1st and 5th birth

Variable

2–2.99 years

3+ years

OR

95% CI

OR

95% CI

All breast cancer

0.95

0.79–1.14

1.15

0.89–1.47

Ductal breast cancer

0.87

0.70–1.07

1.02

0.77–1.35

Ductal (< 50 years)

0.87

0.41–1.85

0.36

0.13–1.03

Ductal (50 + years)

0.93

0.73–1.18

1.22

0.88–1.71

Lobular breast cancer

2.21

1.28–3.79

2.98

1.47–6.03

Lobular (50+ years)

2.24

1.24–4.01

2.65

1.23–5.70

  1. OR odds ratio, 95% CI 95% confidence interval
  2. Models were adjusted for average interval between 5th and the latest birth before index date, age at first and last birth
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BMC Cancer

ISSN: 1471-2407

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