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  • Title: Comparison of ascending and bracketing methods in pure tone audiometry. A multi-laboratory study.
    Author: Arlinger SD.
    Journal: Scand Audiol; 1979; 8(4):247-51. PubMed ID: 531479.
    Abstract:
    Four laboratories participated in this study to compare ascending and bracketing methods in manual determination of hearing thresholds using attenuators with 5 dB step. In all, 214 ears were measured. No significant difference was found between mean thresholds obtained with the two methods in the frequency range 0.5--6 kHz; the four-laboratory, six-frequency grand mean difference was -0.31 dB. The variability among subjects also remained essentially the same for the two methods. However, the bracketing method required a significantly longer test time than the ascending method.
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