Journal of Audiology & Otology  2015;19(2):68-73

doi:10.7874/jao.2015.19.2.68

Test-Retest Reliability of Word Recognition Score Using Korean Standard Monosyllabic Word Lists for Adults as a Function of the Number of Test Words.

Jinsook KIM 1 ; Junghak LEE ; Kyoung Won LEE ; Junghwa BAHNG ; Jae Hee LEE ; Chul Hee CHOI ; Soo Jin CHO ; Eun Yeong SHIN ; Jeonghye PARK

Affiliations

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Keywords

Word recognition score (WRS); Korean standard monosyllabic word list for adults (KS-MWL-A); Test-retest reliability; Confidence interval (CI); Prediction interval (PI)

Country

Republic of Korea

Language

English

Abstract

BACKGROUND AND OBJECTIVES: The purpose was to establish the test-retest reliability of word recognition score (WRS) using Korean standard monosyllabic word lists for adults (KS-MWL-A) recently developed based on the international standard for speech audiometry (ISO 8253-3:2012). SUBJECTS AND METHODS: Subjects consisted of 159 adults aged to 18 to 25 years with normal hearing sensitivity. WRSs were obtained in 2 dB steps from the level of speech recognition thresholds to the level of 86% correct responses or greater. After one or two weeks, retest was performed. Correlation, confidence interval (CI) and prediction interval (PI) were calculated for the reliability. RESULTS: Correlation coefficients were 0.88 for 50 test words, 0.76 for 25 and 0.61 for 10 words. Results also showed that 95% CIs and PIs were narrower for 25 and 50 test words than those for 10 test words. CONCLUSIONS: Korean WRS using the KS-MWL-A has high reliability for 25 and 50 test words, but relatively low for 10 words. It suggested that 95% CIs for each test words would be criteria for significant differences in WRS for groups and 95% PIs at each score of WRS could be utilized for a considerable difference for each individual at retest.