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[Mammographic screening does not reduce breast cancer mortality]
Lakartidningen
|March 25, 1999
Summary
Swedish mammographic screening showed a minimal reduction in breast cancer deaths. The analysis of health statistics indicated a small benefit, with a high cost per life saved.
Area of Science:
- Public Health
- Epidemiology
- Radiology
Context:
- Analysis of Swedish national health statistics from 1987-1996.
- Inclusion of 605,260 women aged 50-69 in a mammography screening program.
- Data encompasses 4,908,176 woman-years and 1,932,353 mammograms.
Purpose:
- To evaluate the effectiveness of a nationwide mammographic screening program.
- To assess the impact of screening on breast cancer mortality rates.
- To estimate the cost-effectiveness of saving a life through this screening program.
Summary:
- The study observed 55 fewer breast cancer deaths than expected, a 0.8% reduction.
- This observed reduction is significantly lower than the 28% mortality reduction suggested by the Two County Council study.
- The estimated cost to save one life ranged from SEK 18-25 million.
Impact:
- Highlights potential overestimation of screening benefits in certain contexts.
- Raises questions about the cost-effectiveness of widespread mammographic screening programs.
- Informs future public health policy regarding breast cancer screening strategies.