Outdoor temperature changes and emergency department visits for asthma in Seoul, Korea: A time-series study.

摘要: Abstract Background Extreme temperatures and temperature changes are known indicators of climate change, large variations for several consecutive days may affect human health such as exacerbating respiratory symptoms. The objective this study was to determine the association between outdoor change asthma-related emergency department visits. In particular, examined seasonality identified susceptible populations, elderly. Methods data visits were collected from July 1, 2007, December 31, 2010 in Seoul, Korea, through National Emergency Department Information System Medical Center we defined absolute difference mean current day previous day. We applied generalized linear models with an allowance over-dispersion quantifying estimated effects on visits, adjusting meteorological conditions, air pollution, time trend. Results general, adversely associated a 1-unit increase 3.5% (95% CI 0.7, 6.4%) addition, seasonal variation after diurnal range had adverse effect spring, summer, fall protective winter. Patients aged ≥65 years experienced most prominent during fall, 17.9% 4.1, 33.6%) per whereas other seasons showed no statistically significant association. Conclusions Along range, be alternative indicator change. Temperature variables well-known easy communicate public relative fluctuations.