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KMID : 1039520150190020068
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Journal of Audiology & Otology
2015 Volume.19 No. 2 p.68 ~ p.73
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Test-Retest Reliability of Word Recognition Score Using Korean Standard Monosyllabic Word Lists for Adults as a Function of the Number of Test Words
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Kim Jin-Sook
Lee Jung-Hak
Lee Kyoung-Won
Bahng Jung-Hwa
Lee Jae-Hee
Choi Chul-Hee
Cho Soo-Jin
Shin Eun-Yeong
Park Jeong-Hye
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Abstract
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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.
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KEYWORD
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Word recognition score (WRS), Korean standard monosyllabic word list for adults (KS-MWL-A), Test-retest reliability, Confidence interval (CI), Prediction interval (PI)
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