Smartphone-Based Audiometry: A Feasible Tool for Hearing Loss Screening
摘要
Hearing loss is a significant global health concern, affecting 15% of the population and creating substantial social and economic burdens. Pure tone audiometry (PTA), the gold standard for hearing evaluation, is often inaccessible in resource-limited settings due to its reliance on trained personnel and soundproof facilities. Smartphone-based audiometry offers a portable, cost-effective alternative for large-scale screening. This study evaluates the diagnostic accuracy and feasibility of the Smartphone based Hearing Test App compared to PTA under real-world outpatient conditions.
MethodologyA prospective observational study was conducted with 50 participants (100 ears) aged 16–65 years at a tertiary care hospital. PTA was performed in a soundproof room, while the Smartphone based Hearing Test App was used in an outpatient setting to mimic real-world conditions. Air conduction thresholds were measured at 500 Hz, 1000 Hz, 2000 Hz, and 4000 Hz. Sensitivity, specificity, mean threshold differences, and Receiver Operating Characteristic (ROC) curve analysis were used to evaluate the app’s diagnostic performance.
ResultsThe Smartphone based Hearing Test App achieved a sensitivity of 69.3% and specificity of 100% for detecting hearing loss > 25 dB, with sensitivity improving to 90% for thresholds > 40 dB. The app systematically underestimated thresholds, with mean differences ranging from 4.8 dB at 500 Hz to 7.3 dB at 4000 Hz. The ROC curve yielded an AUC of 0.8482, indicating excellent diagnostic accuracy.
ConclusionThe Smartphone based Hearing Test App shows promise as a reliable screening tool for moderate-to-severe hearing loss, with scalability and affordability for resource-limited settings.