Abstract
The present study aimed to translate, validate the Reflux Symptom Index in Kannada language and to compare its outcomes between normal individuals and individuals with laryngopharyngeal reflux. Cross sectional study design MATERIALS AND METHOD: : The English version of Reflux Symptom Index was translated into Kannada language using standard procedures. A total of 162 participants participated in the study, 81 with laryngopharyngeal reflux and 81 controls. Internal consistency, test-retest reliability, and clinical validity were calculated. Results revealed that the Kannada Reflux Symptom Index exhibited an excellent internal consistency (α=0.87). The average intra-class correlation coefficient was 0.90 and 0.92, indicating excellent test-retest reliability. Independent sample t test revealed a statistically significant difference between the total scores of both the groups, thereby exhibiting good clinical validity of RSI-K (t=42.71, df=158, P < 0.001). The Kannada Reflux Symptom Index is a reliable and valid tool for use in patients with laryngopharyngeal reflux. It can be used as a quick tool to assess laryngopharyngeal reflux.
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