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KMID : 1138720200460040107
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Korean Public Health Research
2020 Volume.46 No. 4 p.107 ~ p.115
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Dementia mortality among aged 60 years and older in Korea: 2014-2018
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Park Sang-Hwa
Lee Yong-Woon
Lim Dar-Oh
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Abstract
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Purpose: To compare the gender, age, regional and seasonal difference of dementia deaths (vascular & unspecified dementia, Alzheimer disease) in Korea between 2014 and 2018.
Method: The study was based on dementia death data aged 60 years and older (45,969 deaths) from the 2014-2018 vital statistics of Korea. We estimated the age and gender specific dementia death rate, regional variance of age-gender standardized death rate, and seasonal variance of dementia deaths.
Results: The percentage of dementia deaths attributed to Alzheimer disease was 55.1 percent, and percentage of unspecified dementia was 36.9 percent. Dementia death rate per 100,000 among people aged 60 years and older was 94.1. Cause specific dementia death rate were 51.8 in Alzheimer’s disease, 7.5 in vascular dementia and 34.8 in unspecified dementia. Death rates were higher for females (118.4) than for males (63.6). The women died more than men with odds ratio 1.86. Age specific dementia death rates were 4.6 in aged 60-69 years, 44.2 in aged 70-79 years, 367.7 aged 80-89 years, and 1,756.8 in aged 90 years and older. Dementia death rate of male was higher than those of female in aged 60-79 years, with the exception for age group 80 years and older. 80.4 percent of dementia’s decedents died in medical facility, and 12.5 percent in nursing home and others, and 7.1 percent in the home.
In the age-gender standardized dementia death rate (per 100,000) by region, the highest death rate was observed in Gwangju metropolitan city (166.8), and the lowest in Jeju-do (60.6) and Gangwon-do (61.8). There was a significant increase the death rate in Gwangju metropolitan city (odds ratio: 2.36, 95% CI: 2.33-2.39), in Ulsan metropolitan city (1.86, 1.84-1.89), and in Busan metropolitan city (1.75, 1.72-1.77), as compared with the death rate in Seoul metropolitan city (70.8).
Average number of dementia deaths in one day was 25.2 deaths during the period. The incidence of dementia deaths was highest in January (29.4 deaths per day) and December (29.1 deaths) and month with lowest incidence of dementia deaths was from June to August (21.2 ? 21.9 deaths). There was a winter peak (28.8 deaths) and summer trough (21.6 deaths) in daily average number of dementia deaths.
Conclusion: Alzheimer disease accounted for half of all dementia deaths. Death rate due to dementia varied by age, gender and season. Regional variance of dementia deaths was observed between provinces and metropolitan cities in Korea. Further investigation is needed to assess the risk factors (age, gender and regional variances) associated with these differences.
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KEYWORD
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death rate, dementia, Alzheimer disease
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FullTexts / Linksout information
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Listed journal information
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