Title : Winter season temperature drops and sulfur dioxide levels affect on exacerbation of refractory asthma in South Korea: a time-trend controlled case-crossover study using soonchunhyang asthma cohort data.

Pub. Date : 2012 Sep

PMID : 22812434






3 Functional Relationships(s)
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1 METHODS: Using a time-trend controlled case-crossover study design, we calculated odds ratios to evaluate whether exposure to ambient air pollutants and certain meteorological conditions on the day of admission (Lag 0) and up to 3 days before admission (Lag1 through Lag 3) were associated with acute RA exacerbation. Radium ceramide synthase 1 Homo sapiens
2 In winter, a 1 C decrease in ambient temperature and a 1 ppb increase in sulfur dioxide concentration on the day of Lag 1 were associated with 14.8% (95% confidence interval [CI]: 0.9-26.7) and 19.7% (95% CI: 3.3-38.7) increases in the risk of RA exacerbation among nonsmokers, respectively. Sulfur Dioxide ceramide synthase 1 Homo sapiens
3 In winter, a 1 C decrease in ambient temperature and a 1 ppb increase in sulfur dioxide concentration on the day of Lag 1 were associated with 14.8% (95% confidence interval [CI]: 0.9-26.7) and 19.7% (95% CI: 3.3-38.7) increases in the risk of RA exacerbation among nonsmokers, respectively. Radium ceramide synthase 1 Homo sapiens