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Stroke Research and Treatment
Volume 2012, Article ID 731570, 4 pages
http://dx.doi.org/10.1155/2012/731570
Clinical Study

Long-Term Survival of Young Stroke Patients: A Population-Based Study of Two Stroke Registries from Tartu, Estonia

1Department of Neurology and Neurosurgery, University of Tartu, 51014 Tartu, Estonia
2Department of Neurology, North Estonia Medical Center, 13419 Tallinn, Estonia

Received 15 December 2011; Revised 1 February 2012; Accepted 11 February 2012

Academic Editor: Halvor Naess

Copyright © 2012 R. Vibo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The aim of this paper was to evaluate the long-term survival of young stroke patients in Estonia, analyse time trends of survival, and compare the results with other studies. We have used 2 population-based first-ever stroke registry data (1991–1993 and 2001–2003) to analyse the 1-, 5-, and 7-year outcome of young stroke patients by the Kaplan-Meier method of analysis. From the group of 1206 patients, 129 (11%) were aged under 55 years. The overall survival rate at 1, 5, and 7 years was 0.70 (95% CI 0.62–0.78), 0.63 (95% CI 0.55–0.72), and 0.61 (95% CI 0.53–0.70), respectively. The survival was significantly worse for patients with intracerebral haemorrhage ( ) and for those aged from 45 to 54 years compared to the younger age group from 0 to 44 years ( ). For patients with ischemic stroke, aged from 15 to 44 years, the 1-, 5-, and 7-year survival rate was 0.89 (95% CI 0.79–1.00), 0.75 (95% CI 0.61–0.93), and 0.75 (0.61–0.93), respectively. There was no difference in overall survival between the two studied periods. We report a low long-term survival rate among young stroke patients in Estonia. Increasing age and hemorrhagic stroke subtype were associated with lower survival. We have previously shown a worse outcome for 1-year survival compared to other studies and currently this trend continues for 5- and 7-year survival rates. In fact, these are the lowest survival rates for the combined and separate stroke subtypes reported so far.