Abstract
BackgroundTo validate and evaluate the reliability of the Dutch version of the Chronic Ear Survey (CES) in patients suffering from Chronic Suppurative Otitis Media (CSOM) and to evaluate clinical outcomes of surgery using this questionnaire.MethodsWe developed the Dutch version of the CES (D-CES) using forward-backward translation of the original CES into the Dutch language. Next, patients with CSOM and controls completed the D-CES pre- and postoperatively. Internal consistency, test-retest reliability, known-group validity and convergent validity were evaluated. In addition to the D-CES, the Short Form 36 (SF-36) was administered to all participants to correlate D-CES data to quality of life.ResultsA total of 29 patients with CSOM scheduled for ear surgery were included. Our control group consisted of 26 patients scheduled for eye surgery, all without signs and symptoms of CSOM. Cronbachs’ α of the complete questionnaire was 0.69. The Intraclass Correlation Coefficients (ICCs), reflecting test-retest reliability, ranged between 0.69 and 0.82. Scores differed significantly between CSOM patients and controls with substantial lower (more impaired) D-CES scores in the CSOM group. Duration of complaints preoperatively and the presence of a dry ear and/or improvement of hearing postoperatively all had a significant impact on D-CES improvement scores. Small to moderate correlations were found between D-CES subscales and matching subscales of the SF-36.ConclusionThe D-CES is an appropriate disease specific questionnaire to assess a patient’s perceived functional health in CSOM.
Highlights
To validate and evaluate the reliability of the Dutch version of the Chronic Ear Survey (CES) in patients suffering from Chronic Suppurative Otitis Media (CSOM) and to evaluate clinical outcomes of surgery using this questionnaire
Patient reported outcome measures (PROM’s) and impact of medical and/or surgical treatment on quality of life are of increasing importance in current medical practice, including the field of otology [1,2,3,4]
Internal consistency and test-retest reliability With regard to the reliability of the Dutch version of the CES (D-CES) we focused on internal consistency and test-retest reliability of Dutch version of the Chronic Ear Survey (DCES) scores
Summary
To validate and evaluate the reliability of the Dutch version of the Chronic Ear Survey (CES) in patients suffering from Chronic Suppurative Otitis Media (CSOM) and to evaluate clinical outcomes of surgery using this questionnaire. The to be developed generic ear questionnaire is quite long and time consuming to administer Both arguments favoured the need for a short disease-specific functional health questionnaire for patients suffering from CSOM with which we are able to detect pre- and post-operative differences in health. With these demands in mind, the Chronic Ear Survey (CES) was potentially very appropriate. Our objective was to validate and evaluate the reliability of the Dutch version of the Chronic Ear Survey (CES) in patients suffering from CSOM and to evaluate clinical outcomes of surgery using this questionnaire
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