医学
内部评级可靠性
卡帕
组内相关
前庭神经鞘瘤
科恩卡帕
分级(工程)
磁共振成像
等级间信度
前庭系统
核医学
放射外科
放射科
置信区间
统计
内科学
心理测量学
评定量表
数学
工程类
土木工程
临床心理学
放射治疗
几何学
作者
Travis J. Atchley,Nicholas Erickson,Gustavo Chagoya,Matthew Fort,Beverly C. Walters,Benjamin M. McGrew,Winfield S. Fisher
标识
DOI:10.1016/j.wneu.2021.10.151
摘要
The Hannover classification of vestibular schwannomas is designed to stratify tumors based on extrameatal extension and compression of the brainstem. We have previously reported the reliability of the Koos system, but to date, no study has assessed the reliability of the similar Hannover classification.We present an assessment of the intrarater and interrater reliability of the Hannover classification system.After institutional review board approval was obtained, a cross-sectional group of the magnetic resonance imaging of 40 patients with vestibular schwannomas varying in size comprised the study sample. Four raters were selected to assign a Hannover grade to 50 total scans. Interrater and intrarater reliability was calculated and reported using Fleiss's kappa, Kendall's W, and intraclass correlation coefficient (ICC).Interrater observer reliability was found to be moderate when measured using Fleiss' kappa (0.49), extremely strong using Kendall's W (0.93), and excellent as calculated by ICC (0.88). The results were all statistically significant (P < 0.05). Intrarater reliability for Hannover grade ranged from 0.77 to 1.00 (substantial to perfect). By Kendall's W and ICC, all raters had near perfect or excellent agreement. The results were all statistically significant (P < 0.05).The Hannover classification is a reliable system for grading the size of vestibular schwannomas. This supports its continued use and previously published results of the literature in studies relying on this classification. Further studies are needed to evaluate its validity and determine its role in preoperative counseling and determining microsurgery and radiosurgery outcomes.
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