Hearing Impairment Increases Economic Inequality
- Author:
So Young KIM
1
;
Chanyang MIN
;
Dae Myoung YOO
;
Jiwon CHANG
;
Hyo-Jeong LEE
;
Bumjung PARK
;
Hyo Geun CHOI
Author Information
- Publication Type:Original Article
- From:Clinical and Experimental Otorhinolaryngology 2021;14(3):278-286
- CountryRepublic of Korea
- Language:English
-
Abstract:
Objectives:. We evaluated changes in income levels in a hearing-impaired population.
Methods:. The study subjects were selected from the Korean National Health Insurance Service-Health Screening Cohort data from 2002 to 2015 of Koreans ≥40 years old. In total, 5,857 hearing-impaired subjects were matched with 23,428 comparison participants. Differences between the initial income level and income levels at 1, 2, 3, 4, and 5 years post-enrollment were compared between the hearing-impaired and comparison groups. The interaction of time and hearing impairment/comparison was estimated.
Results:. Both the hearing-impaired group and the comparison group showed increased income levels over time. In the hearing-impaired group, the income levels at 4 and 5 years post-enrollment were higher than the initial income level (each P<0.001). In the comparison group, the income levels of all the participants after 1–5 years were higher than the initial income level (each P<0.001). The interaction of time and hearing impairment was statistically significant (P=0.021).
Conclusion:. The increase in income over time was relatively lower in the hearing-impaired adult population; therefore, the income gap widened between this population and the normal-hearing population.
