69 The Otology Questionnaire Amsterdam 4 Responsiveness Responsiveness was based on testing predefined hypotheses regarding the relationship between the OQUA, GSHI and GRS questions. We hypothesized good correlation between the change in OQUA impact domain and GSHI and less, but significant, correlation between change in OQUA complaints and GRS because multiple complaints had to be compared with one GRS. Pearson’s correlation coefficients (r) were used to determine the associations between the OQUA and the GHSI and GRS. Scoring system To interpret the OQUA results, a scoring model had to be formulated. Because of the absence of a comparable scoring system of comparable questionnaire, one had to be developed. The scoring system was developed by an expert panel and authors of this article. Results Patient characteristics In Table 1, patient characteristics of the 2 consecutive cohorts are presented. In the first cohort, 194 patients participated. With regard to the follow-up measurement, 124 patients gave reply on our request to fill in the follow-up questionnaire (64%). No differences in demographics between the entire group of 194 patients and the subgroup of 124 were calculated. In the second cohort, 50 patients participated on the test-retest, but due to missing data, 3 patients had to be excluded. In total, 47 patients were eligible for this responsiveness analyses.
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