Breast Cancer Mortality and Mammography Policies
Author Information
Author(s): Sarkeala T, Heinävaara S, Anttila A
Primary Institution: Finnish Cancer Registry
Hypothesis
How do different invitational policies for mammography screening affect breast cancer mortality in Finland?
Conclusion
The study confirms that organized mammography screening significantly reduces breast cancer mortality, especially with regular invitations for women aged 50-69.
Supporting Evidence
- Regular invitations at 50-69 years of age led to a 28% reduction in breast cancer mortality.
- No overall reduction in mortality was observed with invitations only at 50-59 years of age.
- 80% of person-years were from municipalities inviting 50-59 regularly and 60-69 irregularly.
Takeaway
This study shows that inviting women to get regular mammograms can help save lives by reducing breast cancer deaths.
Methodology
The study analyzed data from 260 municipalities in Finland, comparing breast cancer deaths among women aged 60-79 with different screening invitation policies from 1992 to 2003.
Potential Biases
Potential bias due to self-selection among screened women and variations in screening practices across municipalities.
Limitations
The study's findings may be affected by variations in screening participation and the lack of data on non-invitational mammography.
Participant Demographics
Women aged 60-79 years in Finland.
Statistical Information
P-Value
0.003
Confidence Interval
0.72 (0.51–0.97)
Statistical Significance
p=0.003
Digital Object Identifier (DOI)
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