Assessing the cold temperature effect on hospital visit by allergic rhinitis in Seoul, Korea

Hyomi Kim, Honghyok Kim, Jong-Tae Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The association between temperature and health outcome has been studied in worldwide. However, studies for mild diseases such as AR, with high prevalence and considerable economic burden, are lacking compared to other relatively severe respiratory diseases. We aimed to assess the trend of hospital visit by AR and estimate the cold temperature effect on hospital visit by allergic rhinitis in Seoul, Korea, 2003–2011. We fitted generalized additive model with quasi-poisson distribution, controlling for humidity, long-term trend, day of week, national holiday, and influenza epidemic. We estimated the cumulative cold temperature effect (10%, −1.7 °C) referent to 7.9 °C for the considered lag periods using distributed lag non-linear model: vary from the day of hospital visit to 10 days before. Stratified analysis by season was also conducted. To adjust for possible confounding effect of air pollutants, we additionally adjusted for PM10, O3 and NO2 respectively. Hospital visit counts and rates per 1,000,000 show increasing trend especially in elderly population (over 65 years). Hospital visit rate is higher in children population (age < 13 years). Statistically significant cold temperature effects were found in the total (1.094(95%CI: 1.037, 1.153)), male (1.100 (95%CI: 1.010, 1.163)), female (1.088 (95%CI: 1.059, 1.170)) and adult (1.113 (95%CI: 1.059, 1.170)) population with consideration of 3-day lag period. In the stratified analysis by the season, the strongest effect was shown in the autumn (Sep–Nov) season. Confounding effects by air pollutants were not found. In this study, we found significant increasing trend of hospital visit by AR. This study provides suggestive evidence of cold temperature effect on hospital visit by AR. To reduce the growing burden of AR, it is important to find possible related environmental risk factors. More studies should be conducted for better understanding of temperature effect on AR.

Original languageEnglish
Pages (from-to)938-945
Number of pages8
JournalScience of the Total Environment
Volume633
DOIs
Publication statusPublished - 2018 Aug 15

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temperature effect
Thermal effects
Air Pollutants
elderly population
Poisson distribution
Pulmonary diseases
influenza
respiratory disease
Air
hospital
cold
environmental risk
risk factor
Atmospheric humidity
humidity
autumn
Health
Economics
economics
trend

Keywords

  • Allergic rhinitis
  • Cold temperature effect
  • Hospital visit

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

Cite this

Assessing the cold temperature effect on hospital visit by allergic rhinitis in Seoul, Korea. / Kim, Hyomi; Kim, Honghyok; Lee, Jong-Tae.

In: Science of the Total Environment, Vol. 633, 15.08.2018, p. 938-945.

Research output: Contribution to journalArticle

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abstract = "The association between temperature and health outcome has been studied in worldwide. However, studies for mild diseases such as AR, with high prevalence and considerable economic burden, are lacking compared to other relatively severe respiratory diseases. We aimed to assess the trend of hospital visit by AR and estimate the cold temperature effect on hospital visit by allergic rhinitis in Seoul, Korea, 2003–2011. We fitted generalized additive model with quasi-poisson distribution, controlling for humidity, long-term trend, day of week, national holiday, and influenza epidemic. We estimated the cumulative cold temperature effect (10{\%}, −1.7 °C) referent to 7.9 °C for the considered lag periods using distributed lag non-linear model: vary from the day of hospital visit to 10 days before. Stratified analysis by season was also conducted. To adjust for possible confounding effect of air pollutants, we additionally adjusted for PM10, O3 and NO2 respectively. Hospital visit counts and rates per 1,000,000 show increasing trend especially in elderly population (over 65 years). Hospital visit rate is higher in children population (age < 13 years). Statistically significant cold temperature effects were found in the total (1.094(95{\%}CI: 1.037, 1.153)), male (1.100 (95{\%}CI: 1.010, 1.163)), female (1.088 (95{\%}CI: 1.059, 1.170)) and adult (1.113 (95{\%}CI: 1.059, 1.170)) population with consideration of 3-day lag period. In the stratified analysis by the season, the strongest effect was shown in the autumn (Sep–Nov) season. Confounding effects by air pollutants were not found. In this study, we found significant increasing trend of hospital visit by AR. This study provides suggestive evidence of cold temperature effect on hospital visit by AR. To reduce the growing burden of AR, it is important to find possible related environmental risk factors. More studies should be conducted for better understanding of temperature effect on AR.",
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