DDT and Breast Cancer Trends
Author Information
Author(s): Tarone Robert E.
Primary Institution: International Epidemiology Institute
Hypothesis
Is there a link between childhood DDT exposure and breast cancer rates in young women?
Conclusion
Breast cancer mortality rates among women born between 1930 and 1959 do not show an increase associated with DDT exposure during childhood.
Supporting Evidence
- Breast cancer mortality rates decreased significantly among women 20-24 years of age born between 1946 and 1959.
- Women born after 1945 were exposed to DDT for each of the first 13 years of life.
- Trends in breast cancer mortality rates among women born in 1930-1945 are not consistent with increasing DDT exposure.
Takeaway
The study looked at breast cancer rates and DDT exposure and found that more DDT exposure in childhood didn't lead to more breast cancer in young women.
Methodology
The study used linear regression analyses to quantify trends in breast cancer mortality rates.
Potential Biases
The study may be influenced by established risk factors that predict increasing breast cancer rates.
Limitations
The regression analyses are ecologic and may not account for individual risk factors.
Participant Demographics
U.S. white women aged 20-39 born between 1930 and 1959.
Statistical Information
P-Value
p = 0.04
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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