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      Long-term prognosis after intracerebral haemorrhage: systematic review and meta-analysis.

      Journal of Neurology, Neurosurgery, and Psychiatry
      Cerebral Hemorrhage, complications, mortality, Clinical Trials as Topic, Glasgow Coma Scale, Humans, Prognosis, Recurrence, Risk Assessment, Risk Factors, Stroke, Survival Analysis, Time Factors

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          Abstract

          There is uncertainty about the long-term prognosis after spontaneous intracerebral haemorrhage (ICH). Therefore, we systematically reviewed the literature for studies reporting long-term survival and ICH recurrence, and their predictors. We searched Ovid Medline 1946-2011 inclusive for cohort studies of ≥50 patients reporting long-term (>30 days) outcome after ICH. Two reviewers independently extracted data from each study. We meta-analysed 1-year and 5-year survival data from population-based studies using a random effects model (and quantified inconsistency using the I2 statistic). We identified 122 eligible studies. The pooled estimate of 1-year survival was 46% (95% CI 43% to 49%; nine population-based studies (n=2408); I2=27%) and 5-year survival was 29% (95% CI 26% to 33%; three population-based studies (n=699); I2=6%). In 27 cohort studies, predictors most consistently associated with death were increasing age, decreasing Glasgow Coma Scale score, increasing ICH volume, presence of intraventricular haemorrhage, and deep/infratentorial ICH location. The annual risk of recurrent ICH varied from 1.3% to 7.4% in nine studies and this risk was higher after lobar ICH than non-lobar ICH in two of three hospital-based studies. Four studies reporting the risks of recurrent ICH and ischaemic stroke after ICH found no significant differences between these risks. Less than a half of patients with ICH survive 1 year and less than a third survive 5 years. Risks of recurrent ICH and ischaemic stroke after ICH appear similar after ICH, provoking uncertainties about the use of antithrombotic drugs.

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