Association between Fine Particulate Air Pollution and Daily Clinic Visits for Migraine in a Subtropical City: Taipei, Taiwan.
This study was undertaken to determine whether there was an association between fine particle (PM₂.₅) levels and daily clinic visits for migraine in Taipei, Taiwan. Daily clinic visits for migraine and ambient air pollution data for Taipei were obtained for the period from 2006-2011. The odds ratio of clinic visits was estimated using a case-crossover approach, controlling for weather variables, day of the week, seasonality, and long-term time trends. Generally, no significant associations between PM₂.₅ levels and migraine visits were observed on cool days. On warm days, however, for the single pollutant model (without adjustment for other pollutants), increased clinic visits for migraine were significantly associated with PM₂.₅ levels, with an interquartile range (IQR) rise associated with a 13% (95% CI = 8%-19%) elevation in number of migraine visits. In bi-pollutant model, PM₂.₅ remained significant after the inclusion of sulfur dioxide (SO₂) or ozone (O₃) on warm days. This study provides evidence that higher levels of PM₂.₅ increase the risk of clinic visits for migraine in Taipei, Taiwan.
Department of Pediatrics, Kaohsiung Chang-Gung Memorial Hospital and Chang-Gung University, College of Medicine, Kaohsiung 833, Taiwan. charllysc@hotmail.com.
Chih-Cheng
CC
Chen
Department of Healthcare Administration, I-Shou University, Kaohsiung 824, Taiwan. sionghak@isu.edu.tw.
Shang-Shyue
SS
Tsai
Department of Public Health, College of Health Sciences, Kaohsiung Medical University, Kaohsiung 807, Taiwan. chunyuh@kmu.edu.tw.|Division of Environmental Health and Occupational Medicine, National Health Research Institute, Miaoli 350, Taiwan. chunyuh@kmu.edu.tw.
Chun-Yuh
CY
Yang
D000393:Air Pollutants / Q000032:analysis / Q000633:toxicity*; D000553:Ambulatory Care / Q000706:statistics & numerical data; D002947:Cities; D018592:Cross-Over Studies; D006801:Humans; D008881:Migraine Disorders / Q000139:chemically induced / Q000453:epidemiology*; D016017:Odds Ratio; D052638:Particulate Matter / Q000032:analysis / Q000633:toxicity*; D012307:Risk Factors; D012621:Seasons; D013624:Taiwan
D000393:Air Pollutants; D052638:Particulate Matter