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
In California, both medical and recreational marijuana use are legal
4 Technologically, the product employs selected raw materials and refined processing techniques, equipped with anti-counterfeiting technologies such as origin markings and microprinting
If you bring an item home, clean it or throw it away immediately