Questionnaire Results
The mean score of the IOI-HA was 7 (SD 0), 23.4 (SD 4.0), and 16.3 (SD 4.9) in the unaided, HA, and SHAA groups, respectively (International Outcome Inventory for Hearing Aids (IOI-HA) items for the unaided, hearing aid, and SHAA groups. Error bars represent the SD. SHAA: smartphone-based hearing aid app. *In the ease of communication subscale item of the APHAB, the mean scores were 45.6 (SD 20.0), 51.2 (SD 20.9), and 33.2 (SD 18.0) in the unaided, SHAA, and HA groups, respectively (Mean score of the Abbreviated Profile of Hearing Aid Benefit (APHAB) items for the unaided, hearing aid, and smartphone-based hearing aid app (SHAA) groups. Error bars indicate the SD. AV: aversiveness of sounds; BN: background noise; EC: ease of communication; RV: reverberation. *A comparison of individuals in the SHAA group between unaided and aided conditions found that 37% (14/38), 42% (16/38), 24% (9/38), and 32% (12/38) of users showed improvements in the ease of communication, reverberation, background noise, and aversiveness of sound APHAB subscales, respectively. In the same subscales of the APHAB, the mean postintervention scores were 43.1 (SD 24.0), 50.2 (SD 10.8), 45.8 (SD 8.0), and 35.4 (SD 16.1), respectively (Mean scores of the Abbreviated Profile of Hearing Aid Benefit (APHAB) items for the unaided and aided conditions in the SHAA group, with improvements in ease of communication, reverberation, background noise, and aversiveness of sound.