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The changing pattern of bronchial carcinoma.
1London Chest Hospital.
British Journal of Diseases of the Chest
|January 1, 1987
Summary
Bronchial carcinoma incidence is decreasing in men but still rising in older women. However, a declining trend is emerging in younger women, mirroring past male patterns, despite increased smoking.
Area of Science:
- Epidemiology
- Oncology
Background:
- Bronchial carcinoma incidence data was collected and analyzed from 1975 to 1983.
- Previous studies on bronchial carcinoma incidence were published in 1975.
Purpose of the Study:
- To monitor and analyze trends in bronchial carcinoma incidence across different age groups and sexes.
- To compare current trends with historical data and identify potential shifts in disease patterns.
Main Methods:
- Retrospective analysis of epidemiological data on bronchial carcinoma incidence.
- Stratification of data by age groups (e.g., up to 59, 60-64) and sex.
- Comparison of incidence rates over time, from 1975 to 1983.
Main Results:
- Overall bronchial carcinoma incidence began declining in men after 1974, while it continued to rise in women.
- Incidence fell in men under 59 after 1960 and in women approximately 20 years later.
- A decline in incidence was observed in women aged 60-64 starting in 1982, while rates remain elevated in older women and are falling in men up to age 80.
Conclusions:
- The declining trend in bronchial carcinoma incidence observed in men appears to be emerging in women, particularly in younger age groups.
- This shift is occurring despite increased smoking prevalence among women, suggesting complex etiological factors.
- Further investigation into the reasons behind this surprising trend in female smokers is warranted.