2020 Volume 30 Issue 4 Pages 227-231
Speech perception was tested using CI2004 and 57S monosyllable lists in 50 patients wearing cochlear implants, to examine the effects of the characteristics of these two tests on patients’ scores. The mean score was significantly higher for 57S (66.9%) than for CI2004 (54.5%). When scores for monosyllables that were common in the two tests were extracted and compared, no significant difference was observed between the two tests, with mean scores of 60.7% and 66.0% for CI2004 and 57S, respectively. In terms of monosyllables that were not common, a significant difference between mean scores was observed: 37.6% and 70.4% for CI2004 and 57S, respectively. This indicates that the types of monosyllables adopted in the tests affect the scores, preventing direct comparison of scores obtained using different word lists. In addition, multiple common kana monosyllables lacked correlation, suggesting distortions in the speech data. Considering the lack of a standardized assessment for patients with cochlear implants in Japan, the development of guidelines for efficacy assessment by the societies would be preferable.
