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. 2019 Nov 7;48(1):59.
doi: 10.1186/s40463-019-0385-0.

Adult validation of a self-administered tablet audiometer

Affiliations

Adult validation of a self-administered tablet audiometer

Mark Bastianelli et al. J Otolaryngol Head Neck Surg. .

Abstract

Background: There is evidence to suggest that rates of hearing loss are increasing more rapidly than the capacity of traditional audiometry resources for screening. A novel innovation in tablet, self-administered portable audiometry has been proposed as a solution to this discordance. The primary objective of this study was to validate a tablet audiometer with adult patients in a clinical setting. Secondarily, word recognition with a tablet audiometer was compared against conventional audiometry.

Methods: Three distinct prospective adult cohorts underwent testing. In group 1 and group 2 testing with the automated tablet audiometer was compared to standard sound booth audiometry. In Group 1, participants' pure tone thresholds were measured with an automated tablet audiometer in a quiet clinic exam room. In Group 2, participants completed monosyllabic word recognition testing using the NU-6 word lists. In Group 3, internal reliability was tested by having participants perform two automated tablet audiometric evaluation in sequence.

Results: Group 1 included 40 patients mean age was 54.7 ± 18.4 years old and 60% female; Group 2 included 44 participants mean age was 55.2 ± 14.8 years old and 68.2% female; Group 3 included 40 participants with mean age of 39.4 + 15.9 years old and 60.5% female. In Group 1, compared to standard audiometry, 95.7% (95% CI: 92.6-98.9%) of thresholds were within 10 dB. In Group 2, comparing word recognition results, 96.2% (95% CI: 89.5-98.7%) were clinically equivalent and within a critical difference range. In Group 3, One-way Intraclass Correlation for agreement for the both left- and right-ear pure tone average was 0.98. The mean difference between repeat assessments was 0 (SD = 2.1) in the left ear, and 0.1 (SD = 1.1) in the right ear.

Conclusion: Puretone audiometry and word recognition testing appears valid when performed by non-healthcare experts using a tablet audiometer outside a sound booth in a quiet environment.

Trial registration: ClinicalTrials.gov Identifier: NCT02761798. Registered April, 2016 < https://clinicaltrials.gov/ct2/show/NCT02761798>.

Keywords: Audiology; Automated audiometry; Hearing loss; Screening audiometry; Tablet audiometry.

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Conflict of interest statement

Dr. Matthew Bromwich is Co-Founder and Chief Medical Officer SHOEBOX Inc. Amy E Mark holds a joint Clinical Research Associate position with SHOEBOX Inc. and the Children’s Hospital of Eastern Ontario. Renée Lefrançois is the Director of Audiology at SHOEBOX Inc.

Figures

Fig. 1
Fig. 1
Group 2 Bland Altman Plot – Inter-score difference for word recognition scores between tablet and conventional assessments. Dotted lines depict 95% limits of agreement. Mean difference of 0.8 (95% CI 15,-13)
Fig. 2
Fig. 2
Group 3 Pure-tone threshold correlation graph for test 1 and test 2. ICC for agreement in both the left and right is 0.98
Fig. 3
Fig. 3
Group 3 Bland Altman Plot - Mean differences in pure tone thresholds between repeat assessments. Blue lines depict 95% limits of agreement. Mean difference of 0 (SD = 2.1) on the left, and 0.1 (SD = 1.1) on the right

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