JMA Journal

Figure 1. Location map.
Shizuoka Prefecture in the map of Japan (a), and (b) Hamamatsu City and Shizuoka City in the Shizuoka Prefecture. Five facilities of the Seirei Health Care Division are located in the two cities in Shizuoka Prefecture.

Figure 2. Prevalence of bilateral high-frequency hearing loss by age group in FY2020 (N = 62,634).

Figure 3. Age-standardized prevalence of bilateral high-frequency hearing loss between FY2014 and FY2020.

Figure 4. Incidence rates of bilateral HFHL (N = 77,876).