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Translation and validation of the Korean Version of the Reflux Symptom Score

2021; Elsevier BV; Volume: 38; Issue: 2 Linguagem: Inglês

10.1016/j.jvoice.2021.08.026

1873-4588

Hye Kyu Min, Soyoung Jeon, Jérôme R. Lechien, Jung Min Park, Hwanhee Park, Yu Jung-wan, Suk Kim, Su Jin Jeong, Jung wook Kang, Kim Su il, Lee Young chan, Young‐Gyu Eun, Seong‐Gyu Ko,

Helicobacter pylori-related gastroenterology studies

Objectives To assess the validity and reliability of the Korean version of the reflux symptom score (K-RSS). Materials and Methods The English version of the RSS was translated into Korean and completed by 77 people (44 and 33 people in the patient group and control group, respectively). They completed the K-RSS (K-RSS-1) and reflux symptom index (RSI) questionnaires and answered questions about age, sex, underlying disease, smoking history, and alcohol and coffee consumption. They completed the K-RSS once more (K-RSS-2) after 1 – 2 weeks. Internal consistency was evaluated using Cronbach's α and test-retest reliability using the intraclass correlation coefficient (ICC). External validity was evaluated using the Spearman rank test between the RSI and K-RSS. The Mann-Whitney U test was used to assess internal validity by comparing the K-RSS-1 scores between the patient and control groups. Results The most common symptoms were globus sensation, throat clearing, and throat pain. The K-RSS reported high internal consistency (α = 0.894). The ICC for the total score was 0.883, indicating excellent test–retest reliability. According to the Spearman analysis, there was a significant correlation between the total score of the K-RSS and that of the RSI (rs = 0.902; P < 0.001), demonstrating strong external validity. Furthermore, the patient group showed significantly higher values than the control group in all K-RSS scores, suggesting high internal validity. Conclusion The K-RSS is a patient-reported outcome questionnaire with excellent criterion-referenced validity and ideal reliability.