Results from a prospective nationwide study on Subarachnoid Hemorrhage in Sweden: complications related to endovascular treatment

remnants who underwent 2D-and 3D-DSA between 2012 and 2018 were evaluated.Using the 2D and 3D scales, six raters scored these remnants and repeated the scoring task 8 weeks later.Interrater and intrarater agreement for both grading schemes were calculated using kappa (κ) statistics.Results: Interrater agreement was highly significant, yielding κ-values at 95% CI (p ¼ 0.000) of 0.225 for the first [0.185;0.265] and 0.368 second [0.328; 0.408] time points for 2D-DSA and values of 0.700 for the first [0.654;0.745] and 0.776 second [0.729; 0.822] time points for 3D-DSA.Intrarater agreement demonstrated κ-values between 0.139 and 0.512 for 2D-DSA and between 0.487 and 0.813 for 3D-DSA scores.Conclusion: Interrater and intrarater agreement was minimal or weak for 2D-DSA scores, but strong for 3D-DSA scores.We propose that baseline 3D-DSA characterization may prove more reliable when categorizing clipped IA remnants for purposes of risk stratification and lifelong follow-up.

Abstract licence: CC BY-NC-ND

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.