Season of Initial Detection in Breast Cancer
1991
Season of Initial Detection in Breast Cancer
Sample size: 2000
publication
Evidence: moderate
Author Information
Author(s): M.H. Galea, R.W. Blamey
Primary Institution: Nottingham City Hospital
Hypothesis
Does the season of initial detection affect the prognosis of breast cancer?
Conclusion
The season of detection does not influence the prognosis or survival rates of breast cancer patients.
Supporting Evidence
- There was no difference in frequency of tumour detection between spring/summer and autumn/winter.
- Overall mortality from breast cancer was similar between the two groups at 5, 10, and 15 years.
- Season of detection did not affect survival in women aged over or under 50.
- Oestrogen receptor status did not influence survival based on season of detection.
- Nodal status, grade, and size were the most powerful prognostic features.
Takeaway
It doesn't matter if breast cancer is found in spring or autumn; it doesn't change how well patients do.
Methodology
Analysis of over 2,000 women with primary operable breast cancer treated by the same surgeon.
Limitations
The study only includes data from one surgeon and may not represent broader populations.
Participant Demographics
Women with primary operable breast cancer, treated since 1975.
Statistical Information
P-Value
0.80
Statistical Significance
p=0.80
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