Comparison of 2 approaches for determining the natural history risk of brain arteriovenous malformation rupture.

ABSTRACT: Estimating risk of intracranial hemorrhage (ICH) for patients with unruptured brain arteriovenous malformations (AVMs) in the natural course is essential for assessing risks and benefits of treatment. Traditionally, the survival period starts at the time of diagnosis and ends at ICH, but most patients are quickly censored because of treatment. Alternatively, a survival period from birth to first ICH, censoring at the date of diagnosis, has been proposed. The authors quantitatively compared these 2 timelines using survival analysis in 1,581 Northern California brain AVM patients (2000-2007). Time-shift analysis of the birth-to-diagnosis timeline and maximum pseudolikelihood identified the point at which the 2 survival curves overlapped; the 95% confidence interval was determined using boots

SUBMITTER: Kim H 

PROVIDER: S-EPMC2915493 | biostudies-literature | 2010 Jun

REPOSITORIES: biostudies-literature