ArticleThe World Allergy Organization journal2026
Effect of ambient relative humidity and particulate matter on the levels of asthma therapy.
Article in The World Allergy Organization journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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14 authors.
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Abstract
Objective: We aimed to investigate the associations of the daily mean and short-term variation in ambient relative humidity (RH), temperature, and fine particulate matter (PM Methods: We consecutively recruited 288 newly diagnosed adult patients with asthma and followed them for at least 6 months according to the Global Initiative for Asthma (GINA) strategy. Odds ratios (ORs) for higher GINA treatment steps required to achieve asthma control were estimated using logistic regression. We also conducted exposure-response analyses to explore potentially nonlinear relationships between environmental exposure and asthma treatment step across seasons. Results: A 1% increase in the 1-day RH difference and a 1-μg/m3 increase in the 7-day PM2.5 difference were associated with 1.054-fold and 1.052-fold higher odds of step 4 treatment, respectively. A 1% increase in the 1-day RH difference and a 1-μg/m3 increase in the 7-day PM Conclusions: Our exploratory and hypothesis-generating findings showed that greater short-term variation in RH and PM
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