OBJECT: The purpose of this study was to examine patterns of diagnosis and relative survival rates in individuals in whom a primary @entity1313 was diagnosed between 1973 and 1997; follow-up review of these @entity1 continued through the end of 1999. METHODS: The study population was composed of 21,493 @entity1 with @entity1313 that were diagnosed between 1973 and 1997. Data on these @entity1 were obtained from the population-based Surveillance, Epidemiology, and End Results Program. The study population was divided into three cohorts based on the year of diagnosis, and these groups were compared with respect to variables of interest by performing chi-square tests and relative survival analysis with the life table method. Over time, there were consistently more @entity1 , more Caucasians, more @entity1 undergoing surgery, and more individuals 70 years and older who received the diagnosis of primary @entity1313 . An examination of proportions of individuals with @entity816 , other; @entity3271 , other; and @entity3271 Grade III showed significant temporal changes with frontal and @entity1315 occurring most often. The diagnosis was obtained at an earlier age in African-American than in Caucasian @entity1 . Caucasians had higher proportions of @entity463 ( @entity463 ), which was associated with decreased survival times, and of @entity3271 , other, whereas African Americans had higher proportions of @entity816 , other; ependymoma @entity2946 , all of which were associated with increased survival times. The relative survival case demonstrated a continuous improvement over time, although older @entity1 , those who underwent biopsy only, and those with GBMs continue to have the poorest survival times. The relative survival rates of African Americans consistently were similar or worse than those of Caucasians when the groups were stratified by prognostic factors. CONCLUSIONS: Over time, the relative survival rate of individuals with primary @entity1313 has improved and differences in survival are seen by examining the race of the @entity1 .

Relative survival rates and patterns of diagnosis analyzed by time period for individuals with primary XXXX , 1973-1997.

@entity1 :: ('9606', 'Species') :: ['patients', 'men'] @entity1313 :: ('MESH:D001932', 'Disease') :: ['malignant brain tumor', 'primary malignant brain tumors'] @entity1315 :: ('MESH:D004833', 'Disease') :: ['temporal lobe tumors'] @entity816 :: ('MESH:D001254', 'Disease') :: ['astrocytoma'] @entity463 :: ('MESH:D005909', 'Disease') :: ['glioblastoma multiforme', 'GBM'] @entity2946 :: ('MESH:D008527', 'Disease') :: ['Grade II or III; and medulloblastoma'] @entity3271 :: ('MESH:D009837', 'Disease') :: ['oligodendroglioma']
@entity1313 :: (MESH:D001932,Disease) :: ['malignant brain tumor']
