Initial Study to Evaluate Simple Criteria for Identifying Significant Amounts of Threshold Shift in Persons Who Work in Noise: January-March 1975.

摘要

The report describes the current method used by the U.S. Air Force to identify significant amounts of threshold shift (comparison of current with reference audiogram) among persons who may be experiencing early stages of permanent sensorineural noise-induced hearing loss. This study used the audiograms of 26,756 personnel who routinely work in noise and compared the two current USAF threshold shift criteria with four single experimental criteria: (1) 20 dB TS at any frequency, either ear; (2) 20 dB TS at 2000, 3000, or 4000 Hz, either ear; (3) 15 dB TS at any frequency, either ear; and (4) average of 10 dB at 2000, 3000, and 4000 Hz, either ear. (Author)