• Seo Yoon Lee and Jaeyong Shin.
• Department of Biobehavioral Nursing Science, College of Nursing, University of Illinois at Chicago, Chicago, IL, USA.
• Yonsei Med. J. 2023 Jan 1; 64 (1): 546554-65.

PurposeThis article aimed to investigate 1) whether electronic cigarette (EC) users are more likely to experience asthma attacks or emergency room (ER) visits due to asthma than non-users and 2) how age and smoking behaviors moderate the effect size of the association.Materials And MethodsWe used National Health Interview Survey data from 2016-2019. Multiple logistic regression analysis was performed to identify the association between current EC use and having an asthma attack and ER visitation due to asthma. Interaction terms were included to explore the moderation effects of age and cigarette smoking status. Subgroup analysis was conducted according to age group.ResultsOf the 218911 participants, 2.0% of them experienced an asthma attack, and 0.5% visited the ER due to asthma. Current EC use was associated with higher odds of having an asthma attack. In interaction analysis, age and smoking status were identified as a moderator in the relationship between EC use and asthma attacks. Participants in their 20s or 30s showed the highest interaction effect.ConclusionOur analysis indicates the potential impact of EC use on public health and the moderating effects of smoking behavior.© Copyright: Yonsei University College of Medicine 2023.

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