Age- and Sex-Stratified Population-Based Estimates of Hospitalization-Requiring Asthma Exacerbation in Korea during Prepandemic Period (2002-2019).

From 2002 to 2006, there was an increasing trend in asthma prevalence, with a rise of 9.7% (95% CI, 4.3–23.0%).

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However, starting from 2006 through 2019, a decreasing trend in asthma prevalence was observed, at a rate of −10.2% (95% CI, −12.6 to −9.1%).

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Similarly, the adult group showed a trend of a 17.4% increase (95% CI, 9.3–46.8%) from 2002 to 2006, followed by a 3.3% increase (95% CI, 0.9–5.9%) from 2006 to 2016 and then a decrease of −11.8% (95% CI, −27.4 to −3.4%) from 2016 to 2019.

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