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- W1981308308 abstract "Technology in the hearing aid industry is ever changing. One of the many features that may improve accuracy of hearing aid fittings and patients’ satisfaction is the inception of in-situ audiometry, which allows the clinician to measure hearing thresholds with a hearing aid in the patient's ear. Objective: The present study aimed to investigate the validity of in-situ audiometry measured with a behind-the-ear hearing aid coupled to a customized earmould relative to conventional thresholds measured using supra-aural head phones. Study design: A total of 24 ears from 15 participants with varying degrees of sensorineural hearing loss ranging from moderate to severe, were selected for the study. Pure tone hearing thresholds and real-ear-to-dial-differences were measured for both conventional and in-situ thresholds across 250 Hz to 6 kHz. Results: Slight but significant mean differences (p ˂ 0.05, paired t-test) of 3.2 and 3.4dB between conventional and in-situ thresholds at 2000 and 6000 Hz were found before adding REDD corrections with in-situ thresholds yielding better (lower) thresholds. Except at 250 Hz in dB HL, individual threshold variability between conventional and in-situ threshold measurements was within or equal to ± 10dB for > 95% of ears before and after adding REDD corrections. Large inter-participant variation in measured ear canal SPL was noticed at 250, 500, 4000 and 6000 Hz when measured in-situ compared to headphones, which was attributed to differences in earmould vent sizes provided for different degrees of hearing loss at the low frequencies and probe placement in the high frequencies. Conclusion: Overall in-situ audiometry proved to be valid especially in individuals with symmetrical sensorineural hearing loss. Although there are statistically significant differences, they are within clinically accepted standards. Furthermore, thresholds measured in ear canal SPL will be more comparable as any changes in hearing threshold levels in either of the measurements will be reflected by an inverse change in measured ear canal SPL during REDD measurements." @default.
- W1981308308 created "2016-06-24" @default.
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- W1981308308 date "2015-01-02" @default.
- W1981308308 modified "2023-09-27" @default.
- W1981308308 title "In-situ audiometry: How close is it to conventional audiometry?" @default.
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- W1981308308 doi "https://doi.org/10.3109/21695717.2014.979585" @default.
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