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Prevalence of Dementia in Korea Based on Hospital Utilization Data from 2008 to 2016

Authors
 Yoon Jung Choi  ;  Sanghyun Kim  ;  Young Jae Hwang  ;  Changsoo Kim 
Citation
 YONSEI MEDICAL JOURNAL, Vol.62(10) : 948-953, 2021-10 
Journal Title
YONSEI MEDICAL JOURNAL
ISSN
 0513-5796 
Issue Date
2021-10
MeSH
Aged, 80 and over ; Alzheimer Disease* ; Comorbidity ; Female ; Hospitals ; Humans ; Prevalence ; Republic of Korea / epidemiology
Keywords
Dementia prevalence ; National Health Insurance ; claims data ; standardized prevalence
Abstract
Purpose: Dementia is an important health issue in Korea due to its associated medical costs. Our study aimed to estimate the prevalence of dementia in Korea by analyzing hospital utilization rates.

Materials and methods: We examined National Health Insurance data from 2008 to 2016 and identified all dementia cases. Crude and ageand sex-standardized prevalence were calculated. A generalized linear mixed model was used to estimate prevalence ratios.

Results: We identified 176746 and 530269 dementia cases in 2008 and 2016, respectively. Alzheimer's disease was the most common dementia subtype (65.4% and 86.1% in 2008 and 2016, respectively). Across all age groups, the prevalence of dementia increased consistently: the increase was prominent among patients ≥85 years of age. Among patients ≥65 years of age, crude prevalence was estimated at 31.3 and 72.2 per 1000 population in 2008 and 2016, respectively. Age- and sex-standardized prevalence increased from 31.3 to 62.0 per 1000 population between 2008 and 2016, respectively. The prevalence ratio for dementia in 2016 was 2.02 times (95% confidence interval, 2.01-2.03) higher than that in 2008. When adjusted for age, dementia was more prevalent among females. The most common comorbidity was hypertension, followed by diabetes and stroke.

Conclusion: Our results demonstrated that hospital utilization for dementia increased significantly from 2008 to 2016, reflecting a proportional increase in the prevalence of dementia. Korean healthcare policy must prioritize dementia treatment.
Files in This Item:
T202104108.pdf Download
DOI
10.3349/ymj.2021.62.10.948
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Preventive Medicine (예방의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Chang Soo(김창수) ORCID logo https://orcid.org/0000-0002-5940-5649
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/185436
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