Worldwide incidence of primary nervous system neoplasms: geographical, racial and sex differences, 1960-1977

摘要: International and interregional comparisons of average annual age-adjusted incidence rates for primary tumours the nervous system showed marked variations. The highest were observed in those areas having high socioeconomic levels. In communities with multiple racial groups Caucasians. Migrant populations retained close to found country origin. majority modest increases only while about one-third a decrease during period approximately 15 years. Overall, there was male excess. It is suggested that differences medical practices (including availability specialist expertise), diagnostic facilities individual registry account some variations observed. However, possible aetiological roles genetic, racial, hormonal environmental factors need be evaluated explain consistently higher Caucasians males all races.