Secondary data analysis will be performed as our approach to complete the study. A nationally representative dataset (BRFSS, 2017) will be used to answer our research questions. Our rationale is that there is insufficient research assessing the relationship between pulmonary status and e-cigarette use and that some factors, such as behavioral variables or psychosocial variables, might influence this relationship. Our expectation is that this study will deepen the understanding of the relationship between pulmonary status and e-cigarette use among U.S. adults. This study will cast light on different factors that influence the relationship between pulmonary status and e-cigarette use. Also, the following secondary outcomes will be tested: Severity of COPD symptoms (COPD group) moderate the relationship between pulmonary status (COPD status) and e-cigarette use, and Severity of asthma symptoms (asthma group) moderate the relationship between pulmonary status (asthma status) and e-cigarette use.
Secondary data analysis will be performed as our approach to complete the study. A nationally representative dataset (BRFSS, 2017) will be used to answer the above hypotheses.