Test-Retest Reliability and List Equivalency of the Persian Quick Speech in Noise Test

Background and aim: The main problem of people with hearing loss is difficulty of hearing in background noise. One of the best tests that are used to evaluate speech perception in background noise is Quick Speech in Noise Test. The purpose of current study is to assess test-retest reliability and list equivalency of the Persian version of Quick Speech in Noise Test in young people with normal hearing. Material and methods: This cross-sectional study was performed on 36 young (18-35 years old) individuals with normal hearing. Materials were presented via compact disk of Persian version of quick speech in noise test with standard earphone. Almost one week after test session, re-test was performed. All of the correct words were scored and then signal to noise ratio loss was calculated. Results: The mean SNR Loss was -1.5±0.74 dB. there was significant difference between test- retest scores for lists 1(p<0/05) and no significant difference between test- retest scores for lists 2, 3 and 4(p>0/05). There was significant difference between mean results of list 4 with list 1(p<0/05). There was significant difference for test- retest Pearson's Correlation in all lists. Conclusion: Lists 2 and 3 of Persian version of Quick Speech in Noise Test are reliable and equivalent for determining signal to noise ratio loss.