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Related Experiment Videos

Increasing brain cancer rates in Canada.

Y Mao1, M Desmeules, R M Semenciw

  • 1Surveillance and Risk Assessment Division, Department of National Health and Welfare, Ottawa, Ont.

CMAJ : Canadian Medical Association Journal = Journal De L'Association Medicale Canadienne
|December 15, 1991
PubMed
Summary

Brain cancer death rates significantly increased in older Canadians from 1959-1988, particularly for glioblastomas. While diagnostic improvements may play a role, the rise in brain cancer incidence suggests other factors warrant investigation.

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Area of Science:

  • Epidemiology
  • Oncology
  • Public Health

Background:

  • Brain cancer poses a significant health challenge globally.
  • Understanding epidemiological trends is crucial for public health interventions.

Purpose of the Study:

  • To analyze brain cancer patterns in Canada, focusing on age, sex, temporal, and regional variations.
  • To examine changes in diagnostic techniques, survival rates, and trends by tumor type.

Main Methods:

  • A descriptive epidemiological study utilizing Canada-wide population data from 1959 to 1988.
  • Analysis of death rates, incidence, hospital admissions, survival times, and diagnostic methods for brain cancer.
  • Examination of incidence and death rates, and time trends across Canada, provinces, and census divisions.

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Main Results:

  • A rapid increase in brain cancer death rates was observed in Canadians aged 55 and older between 1959 and 1988.
  • Age-adjusted death rates saw substantial increases across multiple elderly age groups for both men and women.
  • Brain cancer incidence rates also rose significantly, with a more pronounced increase noted for glioblastomas.

Conclusions:

  • The substantial increase in glioblastoma incidence, a more easily diagnosed tumor, suggests that rising brain cancer rates in the elderly may not solely be due to improved diagnostics.
  • Further analytical studies are needed to definitively assess the impact of evolving diagnostic procedures on observed brain cancer trends.