Reliability of intracerebral hemorrhage classification systems: A systematic review.
2016
BackgroundAccurately distinguishing non-traumatic intracerebral hemorrhage (ICH) subtypes is important since they may have different risk factors, causal pathways, management, and prognosis. We systematically assessed the inter- and intra-rater reliability of ICH classification systems.MethodsWe sought all available reliability assessments of anatomical and mechanistic ICH classification systems from electronic databases and personal contacts until October 2014. We assessed included studies’ characteristics, reporting quality and potential for bias; summarized reliability with kappa value forest plots; and performed meta-analyses of the proportion of cases classified into each subtype.Summary of reviewWe included 8 of 2152 studies identified. Inter- and intra-rater reliabilities were substantial to perfect for anatomical and mechanistic systems (inter-rater kappa values: anatomical 0.78–0.97 [six studies, 518 cases], mechanistic 0.89–0.93 [three studies, 510 cases]; intra-rater kappas: anatomical 0.80–1 [...
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