Reply 2: Birth weight as a predictor of breast cancer: a case–control study in Norway
2003

Maternal Age and Breast Cancer Risk

Sample size: 848 publication Evidence: low

Author Information

Author(s): L J Vatten, T I L Nilsen

Primary Institution: Norwegian University of Science and Technology

Hypothesis

Is maternal age at birth positively associated with breast cancer risk?

Conclusion

The study found no evidence that maternal age at birth is associated with breast cancer risk.

Supporting Evidence

  • Maternal age at birth was analyzed using reliable data from Trondheim.
  • Odds ratios were adjusted for age at first birth and parity.
  • Previous findings indicated that birth weight and length are positively associated with breast cancer risk.

Takeaway

The age of a mother when she gives birth doesn't seem to affect the chances of her daughter getting breast cancer.

Methodology

Conditional logistic regression was used to analyze the association between maternal age at birth and breast cancer risk.

Limitations

The study did not find an association, but it was based on specific data from Trondheim.

Participant Demographics

186 breast cancer cases and 662 age-matched controls.

Statistical Information

Confidence Interval

0.7–1.5 for ages 25–29, 0.6–1.5 for ages 30–34, 1.6–1.6 for ages ≥35

Digital Object Identifier (DOI)

10.1038/sj.bjc.6600979

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