TY - JOUR
T1 - Association between ambient particulate matter and disorders of vestibular function
AU - Han, Changwoo
AU - Lim, Youn-Hee
AU - Jung, Kweon
AU - Hong, Yun-Chul
N1 - Copyright © 2017 Elsevier Inc. All rights reserved.
PY - 2017
Y1 - 2017
N2 - Background Exposure to environmental chemicals has been suggested to alter the physiologic state of the inner and middle ear. However, it is unknown if particulate matter exposure is associated with acute vestibular dysfunction. Objectives To estimate the effects of particulate matter exposure on the number of hospital visits related to three major diseases of vestibular dysfunction, Meniere's disease (MD), benign paroxysmal positional vertigo (BPPV), and vestibular neuronitis (VN). Methods Our study subject is from Korean National Health Insurance Service-National Sample Cohort, which is dynamic cohort consist of 1 million participants representing the Korean population. Among total cohort participants, we used the hospital visit data of 210,000 individuals who resided in Seoul from 2007 to 2010. Time series analysis using the Poisson generalized additive model and case-crossover analysis using conditional logistic regression were used to investigate the association between daily particulate matter levels (PM2.5, particulate matter <2.5 μg/m3; PM10, particulate matter <10 μg/m3; PM10-2.5, PM10- PM2.5) and number of MD, BPPV, and VN hospital visits. Results Time series analysis showed that an interquartile range (IQR) increase in PM10and PM10-2.5on lag day 1 was associated with an increased risk of MD hospital visits [relative risk (RR), 95% confidence interval (CI), PM10: 1.09 (1.02–1.15); PM10-2.5: 1.06 (1.02–1.10)]. In addition, elderly individuals (≥60 years old) showed an increased risk of MD hospital visits after particulate matter exposure when compared to younger individuals. An IQR increase in particulate matter on lag day 1 was associated with a marginally significant increase in VN hospital visits [RR (95%CI), PM2.5: 1.11 (0.98–1.25); PM10: 1.07 (0.99–1.15); PM10-2.5: 1.04 (0.99–1.09)]. However, no association between particulate matter exposure and BPPV hospital visits was noted. Case-crossover analyses showed similar results to the time-series analysis across all three diseases. Conclusion MD hospital visits were associated with ambient particulate matter exposure. Elderly individuals, in particular, were more susceptible to particulate matter exposure than younger individuals.
AB - Background Exposure to environmental chemicals has been suggested to alter the physiologic state of the inner and middle ear. However, it is unknown if particulate matter exposure is associated with acute vestibular dysfunction. Objectives To estimate the effects of particulate matter exposure on the number of hospital visits related to three major diseases of vestibular dysfunction, Meniere's disease (MD), benign paroxysmal positional vertigo (BPPV), and vestibular neuronitis (VN). Methods Our study subject is from Korean National Health Insurance Service-National Sample Cohort, which is dynamic cohort consist of 1 million participants representing the Korean population. Among total cohort participants, we used the hospital visit data of 210,000 individuals who resided in Seoul from 2007 to 2010. Time series analysis using the Poisson generalized additive model and case-crossover analysis using conditional logistic regression were used to investigate the association between daily particulate matter levels (PM2.5, particulate matter <2.5 μg/m3; PM10, particulate matter <10 μg/m3; PM10-2.5, PM10- PM2.5) and number of MD, BPPV, and VN hospital visits. Results Time series analysis showed that an interquartile range (IQR) increase in PM10and PM10-2.5on lag day 1 was associated with an increased risk of MD hospital visits [relative risk (RR), 95% confidence interval (CI), PM10: 1.09 (1.02–1.15); PM10-2.5: 1.06 (1.02–1.10)]. In addition, elderly individuals (≥60 years old) showed an increased risk of MD hospital visits after particulate matter exposure when compared to younger individuals. An IQR increase in particulate matter on lag day 1 was associated with a marginally significant increase in VN hospital visits [RR (95%CI), PM2.5: 1.11 (0.98–1.25); PM10: 1.07 (0.99–1.15); PM10-2.5: 1.04 (0.99–1.09)]. However, no association between particulate matter exposure and BPPV hospital visits was noted. Case-crossover analyses showed similar results to the time-series analysis across all three diseases. Conclusion MD hospital visits were associated with ambient particulate matter exposure. Elderly individuals, in particular, were more susceptible to particulate matter exposure than younger individuals.
KW - Air Pollutants/analysis
KW - Benign Paroxysmal Positional Vertigo/epidemiology
KW - Environmental Monitoring
KW - Female
KW - Hospitalization/statistics & numerical data
KW - Humans
KW - Male
KW - Meniere Disease/epidemiology
KW - Middle Aged
KW - Particulate Matter/analysis
KW - Risk
KW - Seoul/epidemiology
KW - Vestibular Neuronitis/epidemiology
U2 - 10.1016/j.envres.2017.02.013
DO - 10.1016/j.envres.2017.02.013
M3 - Journal article
C2 - 28236785
SN - 0013-9351
VL - 155
SP - 242
EP - 248
JO - Environmental Research
JF - Environmental Research
ER -