Long-term exposure to air pollution, especially ground-level ozone, is like smoking about a pack of cigarettes a day for many years, a new study says, and like smoking, it can can lead to emphysema
In Model 3, in addition to all covariates included in Model 2, we added education, socioeconomic factors, and marital status as covariates
We still have many unanswered questions about the long-term impact of vaping, she said
How can I tell that the soothing influence of tobacco upon my nervous system may not have enabled me to comfort myself with calm and courtesy in some awkward personal encounter or negotiation, or carried me serenely through some critical hours of anxious waiting
And second, why did they not believe me