Tehran University of Medical Sciences Auditory and Vestibular Research 2423-480X 25 1 2016 04 20 7 13 EN Javad Hanilou Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran Jamileh Fatahi Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran AND Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran Ali Akbar Tahaei Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran Shohreh Jalaie Biostatistics, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran 2015 11 10 2015 11 10 Background and Aim: The quick speech in noise (Q-SIN) test have been designed to evalu­ate individuals’ ability to recognize speech in noise. This study established to evaluate the test-retest reliability and equivalency of the five test lists of the Persian Q-SIN test in subjects with sensory hearing loss (SHL) and normal hearing individuals. Methods: This cross-sectional study was per­formed on equal number of subjects with normal hearing and SHL, 36 in each group. The participants aged from 18 to 55 years old. The Persian Q-SIN test materials which were reco­rded on a CD were presented binaurally via an audiometer using standard earphones. For eval­uating reliability retest was conducted on the same subjects after three weeks. Results: The mean signal-to-noise ratio (SNR) loss was 0.16 (SD=0.70 dB) in normal hearing subjects. There was a significant difference bet­ ween the mean results of lists 1, 2 and 4 and lists 2, 3 and 4 as well as lists 4 and 5. The mean SNR loss in subjects with SHL was 6.62 (SD=3.20 dB). There was a significant difference between the mean results of list 1 and that of lists 3, 4 and 5 (p<0.001). For reliability analysis of the two groups, there were no signi­ficant differences between test-retest results of the five test lists. Conclusion: Lists 3 and 5 as well as lists 2 and 5 are reliable and equivalent for determining SNR loss in individuals with normal hearing and SHL individuals. https://avr.tums.ac.ir/index.php/avr/article/view/70 https://avr.tums.ac.ir/index.php/avr/article/download/70/36