Risk factors for breast cancer in young women
Author Information
Author(s): McCredie M R E, Dite G S, Southey M C, Venter D J, Giles G G, Hopper J L
Primary Institution: University of Melbourne
Hypothesis
There would be no difference in the profile of risk factors between breast cancer subtypes defined by joint ER/PR status in women under the age of 40.
Conclusion
The study found no evidence that the effects of major established risk factors differ for breast cancers defined by joint ER and PR status in young women.
Supporting Evidence
- The study included 765 cases and 564 controls.
- 71% of eligible cases and 66% of eligible controls agreed to participate.
- ER/PR status was determined for 81% of participating cases.
Takeaway
The study looked at young women with breast cancer and found that the risk factors for different types of breast cancer were pretty much the same.
Methodology
The study used a population-based case–control–family design, recruiting women under 40 diagnosed with breast cancer and matched controls.
Potential Biases
Potential bias due to exclusion of women of Asian descent and those with known BRCA1 or BRCA2 mutations.
Limitations
The study's findings may have limited statistical power to detect modest differences in risk factor profiles.
Participant Demographics
Women under 40 years of age, primarily non-Asian Australians.
Statistical Information
P-Value
0.3
Confidence Interval
1.4–4.6
Statistical Significance
p=0.8
Digital Object Identifier (DOI)
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