Association between Hyperuricemia and Hearing Impairment: Results from the Korean National Health and Nutrition Examination Survey.

Hyperuricemia is associated with a variety of comorbidities. The objective of this study was to investigate the association between hyperuricemia and hearing impairment in Korean adults. Audiometric and laboratory test data from the 2019 to 2020 Korean National Health and Nutrition Examination Survey (KNHANES) were used for analysis. Hearing impairment was defined as a pure-tone average (0.5, 1, 2, 4 kHz) threshold level ≥ 41 decibels. The definition of hyperuricemia was different for males and females: >7 mg/dL for males vs. >6 mg/dL for females. A total of 4857 (weight = 17,990,725) subjects were analyzed. The mean age was 56.8 years old. The weighted prevalence was 12.1% for hyperuricemia and 2.5% for gout. The prevalence of hearing impairment was 13.4%. In the univariable analysis, hyperuricemia was significantly associated with hearing impairment. However, the diagnosis of gout was not associated with hearing impairment. In the multivariable analysis, hyperuricemia (odds ratios (OR): 1.41, 95% confidence interval [CI]: 1.03-1.92, = 0.030) was associated with hearing impairment along with age (OR: 1.12, 95% CI: 1.10-1.14, < 0.001), female sex (OR: 0.43, 95% CI: 0.34-0.64, < 0.001), education (OR: 0.43, 95% CI: 0.30-0.63, = 0.001), and occupational noise exposure (OR: 1.67, 95% CI: 1.25-2.22, = 0.001). In the subgroup analysis, hyperuricemia was associated with hearing impairment in females (OR: 1.59, 95% CI: 1.02-2.48, = 0.041) and the elderly aged 60 years or more (OR: 1.45, 95% CI: 1.05-1.99, = 0.023). : Hyperuricemia was independently associated with hearing impairment, especially in females and the elderly aged 60 years or more.