caa a22 4500 463194411 CHVBK 20180406164918.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s00420-007-0182-3 doi (NATIONALLICENCE)springer-10.1007/s00420-007-0182-3 Air pollution, socioeconomic position, and emergency hospital visits for asthma in Seoul, Korea [Elektronische Daten] [Sun-Young Kim, Marie O'Neill, Jong-Tae Lee, Youngtae Cho, Jaiyong Kim, Ho Kim] Objective: Some epidemiological literature has observed that air pollution effects on health differed across regional or individual socioeconomic position. This study evaluated whether regional and individual socioeconomic position, as indicated by health insurance premiums, modified the effect of air pollution on hospital visits for asthma. Methods: Effects of ambient air pollutants (particulate matter, carbon monoxide, sulfur dioxide, nitrogen dioxide, and ozone) on 92,535 emergency out-patient hospital visits for asthma in Seoul, Korea during 2002 were estimated using case-crossover analysis, adjusting for time trend, weather conditions, and seasonality. Next, interactions between air pollutants and Korean National Health Insurance premium (1) for the individual patient and (2) averaged across the patient's residence district, were entered, first singly then jointly, in the models. Results: Relative risks of emergency outpatient hospital visits were all positively and significantly associated with interquartile increases for selected lags for all air pollutants. In the regression model with interaction terms for both individual premium and regional-average premium, associations with all five-air pollutants ranged from 1.03 to 1.09 times higher among the lowest premium districts compared to the highest premium districts. Of all the pollutants, nitrogen dioxide showed the strongest associations in lower premium districts compared to the higher premium districts. Individual socioeconomic position did not modify the associations in either the single or joint interaction models. Conclusion: In Seoul, community but not individual socioeconomic conditions modified risk of asthma hospital visits on high air pollution days. Springer-Verlag, 2007 Air pollution nationallicence Asthma nationallicence Effect modifier nationallicence Residence characteristics nationallicence Socioeconomic factors nationallicence CI : Confidence interval nationallicence CO : Carbon monoxide nationallicence KNHI : Korean National Health Insurance nationallicence NO2 : Nitrogen dioxide nationallicence PM10 : Particulate matter ≤10μm in aerodynamic diameter nationallicence REM : Relative effect modification nationallicence RR : Relative risk nationallicence SEP : Socioeconomic position nationallicence SO2 : Sulfur dioxide nationallicence Kim Sun-Young Department of Environment and Occupational Health Sciences, School of Public Health and Community Medicine, University of Washington, Seattle, WA, USA aut O'Neill Marie Departments of Epidemiology and Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA aut Lee Jong-Tae Department of Health Management, Graduate School, Hanyang University, Seoul, South Korea aut Cho Youngtae Department of Epidemiology and Biostatistics, Graduate School of Public Health and The Institute of Health and Environment, Seoul National University, 110-799, Seoul, South Korea aut Kim Jaiyong Primary Health Care Team, Research Department, Korea Health Insurance Review Agency, Seoul, South Korea aut Kim Ho Department of Epidemiology and Biostatistics, Graduate School of Public Health and The Institute of Health and Environment, Seoul National University, 110-799, Seoul, South Korea aut International Archives of Occupational and Environmental Health Springer-Verlag 80/8(2007-08-01), 701-710 0340-0131 80:8<701 2007 80 420 https://doi.org/10.1007/s00420-007-0182-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00420-007-0182-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kim Sun-Young Department of Environment and Occupational Health Sciences, School of Public Health and Community Medicine, University of Washington, Seattle, WA, USA aut NATIONALLICENCE 700 1- O'Neill Marie Departments of Epidemiology and Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA aut NATIONALLICENCE 700 1- Lee Jong-Tae Department of Health Management, Graduate School, Hanyang University, Seoul, South Korea aut NATIONALLICENCE 700 1- Cho Youngtae Department of Epidemiology and Biostatistics, Graduate School of Public Health and The Institute of Health and Environment, Seoul National University, 110-799, Seoul, South Korea aut NATIONALLICENCE 700 1- Kim Jaiyong Primary Health Care Team, Research Department, Korea Health Insurance Review Agency, Seoul, South Korea aut NATIONALLICENCE 700 1- Kim Ho Department of Epidemiology and Biostatistics, Graduate School of Public Health and The Institute of Health and Environment, Seoul National University, 110-799, Seoul, South Korea aut NATIONALLICENCE 773 0- International Archives of Occupational and Environmental Health Springer-Verlag 80/8(2007-08-01), 701-710 0340-0131 80:8<701 2007 80 420 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer