Descriptive epidemiology.
D000367:Age Factors; D001932:Brain Neoplasms / Q000175:diagnosis / Q000453:epidemiology* / Q000401:mortality; D003430:Cross-Sectional Studies; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D012737:Sex Factors; D013223:Statistics as Topic