Introduction.We introduce a rating tool that objectively evaluates the skills of surgical trainees performing cochlear implant surgery.\nMethods. Seven residents and seven experts performed cochlear implant surgery sessions from mastoidectomy to cochleostomy\non a standardized virtual reality temporal bone. A total of twenty-eight assessment videos were recorded and two consultant\notolaryngologists evaluated the performance of each participant using these videos. Results. Interrater reliability was calculated\nusing the intraclass correlation coefficient for both the global and checklist components of the assessment instrument. The overall\nagreement was high. The construct validity of this instrument was strongly supported by the significantly higher scores in the\nexpert group for both components. Conclusion. Our results indicate that the proposed assessment tool for cochlear implant surgery\nis reliable, accurate, and easy to use. This instrument can thus be used to provide objective feedback on overall and task-specific\ncompetency in cochlear implantation.
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