Liigant A, Kulla A, Linnamägi U, Asser T, Kaasik AE. Survival of patients with primary CNS tumours in Estonia.
Eur J Cancer 2001;
37:1895-903. [PMID:
11576846 DOI:
10.1016/s0959-8049(01)00220-9]
[Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We studied a population-based survey that included 1417 patients with a primary central nervous system (CNS) tumour diagnosed in Estonia between 1986 and 1996. Survival rates at 1 and 5 years and median survival by histology and patient's age at diagnosis were estimated. Median survival time for all tumours was 33.2 months and 1- and 5-year survival rates were 59.3 and 46.0%, respectively. In multivariate analysis, younger age, better clinical condition (i.e. a Karnofsky Performance Status (KPS) score of 60 and more) and tumour histology were all dependent prognostic factors for better survival. Risk of death was more than 8 times greater for glioblastoma (Risk Ratio (RR) 8.31) and approximately seven times greater for anaplastic astrocytoma (RR 7.22) and other gliomas (RR 5.74) compared with meningiomas. Comparing the first (1986-1989) and the third (1994-1996) time periods, statistically significant improvements in survival occurred for all tumours and astrocytomas. Declines in survival during the second period (1990-1993) were statistically significant for all the tumour groups, but the most striking decrease took place in patients with glioblastoma. Age-specific rates showed that the increase in survival was more evident for patients aged between 45 and 64 years.
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