Breast cancer and the pill - response to the letter from R.D.T. Farmer
1989

Response to Critique on Breast Cancer and Oral Contraceptives

Editorial

Author Information

Author(s): C.R. Kay, P.C. Hannaford

Primary Institution: The Royal College of General Practitioners

Hypothesis

Is there a link between the use of oral contraceptives and the development of breast cancer?

Conclusion

The study could not determine a definitive link between oral contraceptive use and breast cancer.

Supporting Evidence

  • The study could not explain all observations in biological terms.
  • There was no evidence of a correlation between smoking and breast cancer.
  • The categorization of social class is a useful measure for understanding morbidity patterns.

Takeaway

The researchers couldn't find a clear answer about whether birth control pills cause breast cancer.

Potential Biases

There is a potential for misclassification of smoking status affecting results.

Limitations

The study faced challenges with follow-up and data collection on smoking habits.

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