Fig. 4.

Results of between group comparison for the traditional pure-tone audiometry. Mean, IQR (interquartile range), and 95 % CI (confidence interval) of Sound showed 3.99, 1.30, and 3.62–4.36 for skilled audiologists and 4.01, 0.50, and 3.63–4.39 for undergraduate students. PEOU showed 3.61, 0.70, and 3.31–3.91 for skilled audiologists and 3.45, 0.93, and 3.15–3.75 for undergraduate students. PU showed 4.32, 0.84, and 4.06–4.58 for skilled audiologists and 4.23, 0.87, and 3.93–4.53 for undergraduate students. IU showed 4.44, 1.00, and 4.16–4.72 for skilled audiologists and 4.17, 1.08, and 3.84–4.50 for undergraduate students.