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Cindy Hyde-Smith

Second, we estimated multivariable linear regression models of cigarettes smoked per day, conditional on the frequency of vaping (categorized as every-day, some-days, ever but no longer, never), psychological distress (categorized as NPD, MPD, and SPD), the interaction of vaping and psychological distress (these variables were demeaned, or centered so that main effect coefficients could be directly interpreted 26 ), and other covariates described above

[DOI] [PubMed] [Google Scholar] Durazzo TC, Cardenas VA, Studholme C, Weiner MW, Meyerhoff DJ

Stay Positive Quitting smoking is difficult

This build up can also cause your system to work harder and use more energy