Breast Cancer and Induced Abortions in Chinese Women
Author Information
Author(s): Ye Z, Gao D L, Qin Q, Ray R M, Thomas D B
Primary Institution: Fred Hutchinson Cancer Research Center
Hypothesis
Does having an induced abortion increase the risk of breast cancer in women?
Conclusion
The study found no significant association between induced abortion and breast cancer risk among the women studied.
Supporting Evidence
- The relative risk of breast cancer was not significantly associated with having an induced abortion.
- Analysis of detailed interviews yielded similar results to the cohort study.
- Few women had abortions after 13 weeks gestation, and those cases did not show significant risk increases.
Takeaway
The study looked at a lot of women in China and found that having an abortion doesn't seem to make you more likely to get breast cancer.
Methodology
The study included a cohort of women enrolled in a breast self-examination trial, with data collected through questionnaires and interviews.
Potential Biases
There is a potential for recall bias, especially regarding the reporting of abortions before marriage.
Limitations
The study may have underreported abortions due to social stigma, and the results may not apply to populations with different cultural attitudes towards abortion.
Participant Demographics
The participants were female textile workers in Shanghai, born between 1925 and 1958.
Statistical Information
Confidence Interval
95% C.I.: 0.91, 1.25
Digital Object Identifier (DOI)
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