title: Comparing ozone metrics on associations with outpatient visits for respiratory diseases in Taipei Metropolitan area.
abstract: This study reported cumulative 6-day (lag 0-5 days) relative risks (RR) and confidence intervals (CI) of daily outpatient visits for total respiratory disease (RD), asthma, and chronic airway obstruction not otherwise classified (CAO) associated with three ozone metrics (daily 1-h maximum (O3, 1 h max), 8-h average maximum (O3, 8 h max), 24-h average (O3, 24 h avg)), and an alternative oxidant indicator (Ox) in Taipei Metropolitan, using distributed lag non-linear models after controlling for potential confounders. The Ox showed the strongest association with outpatient visits for total RD (RR = 1.10, 95% CI: 1.10, 1.11) and asthma (RR = 1.18, 95% CI: 1.00, 1.39) in the cold season. The O3, 24 h avg appeared to be the optimal ozone metric associating with total RD than O3, 1 h max and O3, 8 h max based on model selection. In conclusion, outpatient visits for total RD associated with ozone vary with ozone metrics, disease and season.
authors: Institute of Environmental Health, College of Public Health, National Taiwan University, 17 Xu-Zhou Road, Taipei 10055, Taiwan.
authors: Yu-Kai
authors: YK
authors: Lin
authors: Shuenn-Chin
authors: SC
authors: Chang
authors: Chitsan
authors: C
authors: Lin
authors: Yi-Chun
authors: YC
authors: Chen
authors: Yu-Chun
authors: YC
authors: Wang
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000706:statistics & numerical data*; D000554:Ambulatory Care Facilities / Q000706:statistics & numerical data*; D002947:Cities / Q000706:statistics & numerical data; D004781:Environmental Exposure / Q000706:statistics & numerical data*; D006801:Humans; D010126:Ozone / Q000032:analysis*; D012140:Respiratory Tract Diseases / Q000453:epidemiology*; D013624:Taiwan
chemical_list: D000393:Air Pollutants; D010126:Ozone