Data collection plan
After giving informed consent, the patient will receive a unique identifier, after which members of the research team will extract all necessary clinical parameters from the electronic health records (EHRs, HiX) into an electronic Case Report Form (eCRF) the UMCU endorsed system Castor EDC. Castor EDC is a browser-based, metadata-driven EDC software solution and workflow methodology for building and managing online databases. The eCRF contains data items as specified in this research protocol. Modification of the eCRF will be made only if deemed necessary and in accordance with an amendment to the research protocol. Access to the eCRF is password protected and specific roles are assigned (e.g., study coordinator, investigator, monitor). The assessors are specialized in the field of otology and are therefore trained to interpret the results of the various outcome measures (CBCT scans, speech performance tests, impedance values). Participant retention will be promoted by efficient schedule strategies, namely inviting participants for follow-up appointments on the same days as the clinical rehabilitation consults. The study participants will receive a separate invitation for each follow-up appointment, shortly before.