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Audiol > Volume 11(2); 2015 > Article
Audiology 2015;11(2): 156-162.
Published online: April 30, 2015.
doi: http://dx.doi.org/10.21848/audiol.2015.11.2.156
한국표준 일반용 이음절어표를 사용한 어음인지역치의 검사-재검사 신뢰도
진소영1, 이정학2
1삼성의료원 이비인후과
2한림국제대학원대학교 청각학과
Test-retest Reliability of Speech Recognition Thresholds using the Korean Standard Bisyllabic Word List for Adults
So Young Jin1, Junghak Lee2
1Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Seoul
2Department of Audiology, Hallym University of Graduate Studies, Seoul, Korea
Correspondence  Junghak Lee ,Tel: (02) 2051-4950, Fax: (02) 3453-6618, Email: leejh@hallym.ac.kr
Received: February 16, 2015; Revised: March 29, 2015   Accepted: March 30, 2015.  Published online: April 30, 2015.
ABSTRACT
The purpose of this study was to investigate the test-retest reliability of speech recognition thresholds (SRTs) measured by Korean standard bisyllabic word list for adults (KS-BWL-A). Thirteen normal-hearing adults (14 ears) and 67 hearing-impaired persons (93 ears) with sensorineural hearing loss (SNHL) participated in this study. Subjects with SNHL were categorized into four groups: 1) mild hearing loss, 2) moderate hearing loss, 3) moderately severe hearing loss, and 4) severe-to-profound hearing loss. Pure tone audiometry and the SRT test with KS-BWL-A were administered in all participants. The SRTs were mathematically calculated based on the national and international standards (ISO 8253-3, 2012; KS I ISO 8253-3, 2009). The retest of the SRTs was performed within two weeks with the same procedure as the initial test. Results showed that the first SRTs were highly correlated with the second SRTs for normal-hearing and hearing-impaired groups. There was no significant difference between the first and second SRTs for normal-hearing group. For hearing impaired groups, the second SRTs were slightly decreased than the initial SRTs in all four groups. The 95% confidence intervals for each group were between ± .82 ~ ±1.44 dB and the 95% prediction intervals of individual scores for each group were between ±3.10 ~ ±4.34 dB. Results recommend that SRT test using the KS-BWL-A be a reliable method in every category of SNHL as well as normal-hearing based on high correlation, narrow CI and PI. It is also suggested that a difference greater than 5 dB between the first and second SRTs be interpreted as significant in clinical situations.
Key Words: Speech recognition threshold (SRT), Korean standard bisyllabic word list for adults (KS-BWL-A), Test-retest reliability, Confidence interval (CI), Prediction interval (PI)
중심단어: 어음인지역치, 한국표준 일반용 이음절어표, 검사-재검사 신뢰도, 신뢰구간, 예측구간
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