US - Annual report to the nation on the status of cancer, 1975 - 2007
The American Cancer Society, the Centers for Disease Control and Prevention (CDC), the National Cancer Institute, and the North American Association of Central Cancer Registries (NAACCR) collaborate annually to provide updated information on cancer occurrence and trends in the United States. This year’s report highlights brain and other nervous system (ONS) tumors, including nonmalignant brain tumors, which became reportable on a national level in 2004
The report states:
"Overall cancer incidence rates decreased by approximately 1% per year; the decrease was statistically significant (P < .05) in women, but not in men, because of a recent increase in prostate cancer incidence"
With respect to brain tumors the authors say:
‘An important finding of the current analysis is the relative stability of the long-term incidence trends of malignant tumors of the neuroepithelial tissue. During the 27-year (1980–2007) time period studied, an increase of 1.9% per year during 1980–1987 was counterbalanced by a decrease of 0.4% per year during the remain¬ing 20 years, resulting in nearly identical incidence rates at the beginning and end of the study.
However, marked differences in trends were observed for histological groups within this category of tumors.’