virginia burley tobacco Seeds - 509 Nicotiana tabacum is the most widely grown species of tobacco Burley vs. Virginia Hookah Tobacco

[DOI] [Google Scholar] Talhout R

More than 16 million adults in the United States have a disease caused by smoking cigarettes, and smoking-related illnesses lead to half a million deaths each year

This degree of tissue change is directly dependent upon the type of smokeless tobacco (leaf versus finecut), the specific brand of tobacco, the size of the pinch of tobacco, and the length of time the pinch is in contact with the mouth tissues

As PPV is a function of the prevalence of the behaviour being measured, and the prevalence of smoking is likely to differ between levels of the exposure and outcome variables compared, PPV was not considered an appropriate measure for characterising misclassification

Carpenter MJ, et al