Comparison of Clinical Usefulness of Program-Assisted and Real Ear Measurement-Assisted Hearing Aids Fitting / 대한이비인후과학회지

ABSTRACT

BACKGROUND AND OBJECTIVES: The main objectives of this study were to determine the clinical usefulness of the program-assisted and real ear measurement (REM)-assisted fitting of hearing aids. SUBJECTS AND METHOD: Fifteen participants with moderate to moderately severe hearing loss were enrolled in this study. Objective and subjective fitting results were assessed to compare the benefits between the program-assisted fitting (using a software fitting program) and the REM-assisted fitting. Real ear insertion gain (REIG), sound-field audiometry using warble tone, and Korean Hearing in Noise Test (K-HINT) were performed as objective tests. Sound quality rating was performed as a subjective test. RESULTS: In the program fitting, 48.89% of fitting points failed to come within ±10 dB of the REIG target. In the REM fitting, however, the percentage of failure significantly decreased to 23.33% (p=0.013). In K-HINT test, the reception threshold for speech in quiet situation significantly decreased from 50.1 dB HL with the program fitting to 44.7 dB HL after the REM fitting (p < 0.001). In front noise condition, signal-to-noise ratio improved from 4.53 dB to 3.50 dB with the REM fitting without statistical significance (p=0.099). In the sound quality rating, the REM fitting (4.27±0.56) showed a significantly better sound quality ratings than the program fitting (3.69±0.74) (p=0.017). CONCLUSION: The REM fitting showed better results in both subjective and objective measurements than the program fitting.