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Samples in periodicals archive:
The size and location of the perforation was determined by microscopic evaluation, and the pure tone average was calculated by audiometric tests before and after surgery.
The audiometric scores analyzed for each ear were: speech discrimination; pure tone scores at frequencies of 250, 500,1,000, 2,000, 3,000, 4,000, 6,000, and 8,000 hertz (Hz); and the pure tone average over the 8 frequencies measured.
The pure tone average (PTA) was calculated for each ear.
Two metrics commonly used to define hearing loss in terms of pure tone thresholds are the traditional pure tone average (PTA) of thresholds at 500, 1,000, and 2,000 Hz and the high-frequency PTA (HFPTA) of thresholds at 1,000, 2,000, and 4,000 Hz .
For years, hearing impairment typically has been defined by the unaided pure tone average (PTA) of the air-conduction thresholds at 500, 1,000, and 2,000 Hz.