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Updated: Jun 17, 2026
06:46
Competing-Risk Nomogram for Predicting Cancer-Specific Survival in Multiple Primary Colorectal Cancer Patients after Surgery
Published on: September 27, 2024
[Survival after breast cancer--differences between Norwegian counties]
Mette Kalager1, Rolf Kåresen, Erik Wist
1Kreftregisteret, Postboks 5313, Majorstuen, 0303 Oslo, Norway. mette.kalager@kreftregisteret.no
Summary
Breast cancer survival rates vary significantly across Norwegian counties, indicating disparities in healthcare access. These survival differences highlight potential inequalities in mammography screening, diagnostics, and treatment.
Area of Science:
- Oncology
- Public Health
- Epidemiology
Background:
- Equal access to healthcare is a key goal in Norwegian health policy.
- Disparities in healthcare access may impact patient prognosis.
- Breast cancer is the most prevalent cancer among Norwegian women.
Purpose of the Study:
- To analyze breast cancer survival rates across Norwegian counties.
- To identify potential geographic variations in breast cancer outcomes.
Main Methods:
- Population-based study of all Norwegian women diagnosed with breast cancer (1985-2004).
- Analysis of breast cancer survival by county using Cox proportional hazards models.
Main Results:
- Included 41,833 women; 16,494 (39.4%) died during median 5.8-year follow-up.
- Five-year breast cancer survival ranged from 74.1% to 80.6% between counties.
- Age-adjusted analyses showed a 20% difference in survival between counties, with stage two tumors showing a 45% difference.
Conclusions:
- Significant differences in breast cancer survival exist between Norwegian counties.
- Potential contributing factors include variations in mammography screening, diagnostics, and treatment.
- Addressing these disparities is crucial for improving equitable breast cancer care.
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