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Article

Exposure to Ambient Air Pollution and Cognitive Impairment in Community-Dwelling Older Adults: The Korean Frailty and Aging Cohort Study

1
Department of Family Medicine, Research Institute on Healthy aging, Konkuk University School of Medicine, Konkuk University Medical Center, Seoul 05030, Korea
2
Department of Neurology, Research Institute on Healthy aging, Konkuk University School of Medicine, Konkuk University Medical Center, Seoul 05030, Korea
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(19), 3767; https://doi.org/10.3390/ijerph16193767
Received: 28 August 2019 / Revised: 14 September 2019 / Accepted: 4 October 2019 / Published: 7 October 2019
The aim of this study was to investigate the associations between ambient air pollutants and cognitive impairment in Korean older adults. The cognitive function of 2,896 participants aged 70 to 84 years was measured using the Korean version of the mini-mental state examination, the digit span test, the word list learning test, and the frontal assessment battery. After matching the average concentrations of particulate matter (PM) <10 μm in size (PM10) and <2.5 μm (PM2.5), NO2, CO, SO2, and O3 between 2013 and 2017, the association between air pollutants and cognitive scales was analyzed using a linear mixed regression and a multiple logistic regression analysis (after adjusting for age, sex, health related behaviors, socioeconomic status, comorbidity, and meteorological data). Exposure to PM2.5, PM10, NO2, SO2, and CO was associated with cognitive impairment above and beyond age or education level effects. Specifically, PM2.5 was negatively associated with most components of the cognitive scales (interquartile range for PM2.5: 2.0 μg/m3, odds ratio for poor global cognition: 2.28, 95% confidence interval: 1.60–3.26). These associations may be affected by sex, residence area, or alcohol intake. Conclusively, air pollutants, especially PM2.5, were associated with cognitive impairment, including global cognition, attention, memory, and executive function in Korean older adults aged ≥70 years. View Full-Text
Keywords: air pollution; aged; particulate matter; memory; cognition air pollution; aged; particulate matter; memory; cognition
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    Link: http://Supplementary Table
    Description: Table S1: Distribution of annual concentrations of air pollutants and meteorological data in 2013–2017, Table S2: Correlations between cognitive scales and the annual concentrations of air pollutants, 2013–2017* (PM2.5: 2015–2017)
MDPI and ACS Style

Shin, J.; Han, S.-H.; Choi, J. Exposure to Ambient Air Pollution and Cognitive Impairment in Community-Dwelling Older Adults: The Korean Frailty and Aging Cohort Study. Int. J. Environ. Res. Public Health 2019, 16, 3767. https://doi.org/10.3390/ijerph16193767

AMA Style

Shin J, Han S-H, Choi J. Exposure to Ambient Air Pollution and Cognitive Impairment in Community-Dwelling Older Adults: The Korean Frailty and Aging Cohort Study. International Journal of Environmental Research and Public Health. 2019; 16(19):3767. https://doi.org/10.3390/ijerph16193767

Chicago/Turabian Style

Shin, Jinyoung, Seol-Heui Han, and Jaekyung Choi. 2019. "Exposure to Ambient Air Pollution and Cognitive Impairment in Community-Dwelling Older Adults: The Korean Frailty and Aging Cohort Study" International Journal of Environmental Research and Public Health 16, no. 19: 3767. https://doi.org/10.3390/ijerph16193767

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