Kelly B R, Denniston G L
J Am Audiol Soc. 1976 Nov-Dec;2(3):83-7.
The present study was undertaken to determine which intensity level of an unoccluded bone-conducted (BC) signal might be best suited for use as a supplemental procedure to an individual pure-tone air-conduction school screening program. Four intensity levels (0, 5, 10, 15 dB hearing level) of a 500 Hz BC tone were presented in ascending order to a public school population in addition to screening by impedance audiometry and pure-tone air conducted signals. Tetrachoric analysis using impedance screening results as a standard comparison revealed that a 10-dB unoccluded BC signal at 500 Hz provided an effective supplemental procedure for identifying conductive pathology in the population studied.
本研究旨在确定未掩蔽骨导（BC）信号的哪种强度水平最适合作为个体纯音气导学校筛查项目的补充程序。除了通过声阻抗测听和纯音气导信号进行筛查外，还以升序向公立学校人群呈现了500Hz BC音的四个强度水平（0、5、10、15dB听力级）。以声阻抗筛查结果作为标准对照进行的四分相关分析表明，500Hz时10dB的未掩蔽BC信号为在所研究人群中识别传导性病变提供了一种有效的补充程序。
