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To analyze trends in the annual incidence of primary malignant brain tumors among the elderly over a period of time.

Increasing Annual Incidence of Primary Malignant Brain Tumors in the Elderly

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To analyze trends in the annual incidence of primary malignant brain tumors among the elderly over a period of time.
Analysis of age-specific incidence rates for primary malignant brain tumors from 1973 to 1985
Data collected from the United States across all races and genders
Reported rates for different age groups were compared between 1973/1974 and 1985
Incidence rates for those aged 75-79, 80-84, and 85+ increased to 187%, 394%, and 501% of 1973/1974 rates, respectively.
Average annual percentage changes were +7.0%, +20.4%, and +23.4% for these age ranges.
The primary histologic types in the elderly were glioblastoma multiforme and astrocytoma, known to be highly malignant.

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Analysis demonstrates rising incidence of primary malignant brain tumors in the elderly, suggesting increasing health concern.

Grieg et al. (1990) studied this question.

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