Asma et al failed to establish any association between the type of treatment given and the effect on hearing thresholds in their study on conventional oral hypoglycaemic agents versus insulin therapy on pure tone average
6] also showed that the pure tone average
(PTA) air--bone gap (ABG) was smaller in the malleus-preserved group than in the malleus-absent group.
5 years; 55% of the sample presented normal hearing in both ears, and symmetrical pure tone average
on mild to moderate hearing loss of sensorineural type.
The pure tone average
(PTA) was calculated as the mean of hearing thresholds at 500, 1000, 2000, and 4000 Hz.
Subjects were questioned to elicit otological and general medical conditions, underwent an ear, nose and throat examination, provided serum samples and a pure tone average
hearing test was conducted.
Abbreviations: ANSI = American National Standards Institute, AUC = area under Receiver Operating Characteristic curve, dB HL = decibels hearing level, dB SL = decibels sensation level, dB SPL = decibels sound pressure level, FCDS = forced-choice double staircase, IOM = Institute of Medicine, LM = loudness match, MML = minimum masking level, PM = pitch match, PTA = pure tone average
, PVAMC = Portland VA Medical Center, RI = residual inhibition, ROC = Receiver Operating Characteristic, SBC = Schwartz Bayes Criterion, TES = Tinnitus Evaluation System, VA = Department of Veterans Affairs, VHA = Veterans Health Administration.
There was no statistically significant variation, according to the data obtained from the pure tone average
threshold of the shockwave procedure on the otoacoustic emission test.
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.
Means of air conduction and bone conduction (AC, BC) thresholds(dBHL) and pure tone average
(PTA) obtained for male and female cases Frequency Male (N =19) (Hz) Air Bone conduction conduction thresholds thresholds Right ear Left ear Common 250 33.
In terms of pure tone average
, nine patients had an improvement of more than 20 dB at 3-6 months after implantation.
Functional hearing status was determined on the basis of the pure tone average
across 500, 1000, and 2000 Hz in the better ear.