effect of warning labels on cigarettes Graphic Are Scary, but Do They Work? Strong causal language on product

We searched freely available publications, such as statistical yearbooks, for data using key terms including (but not limited to) cigarette, production, external trade, manufacturing, industry, and tobacco. If complete data were not found on the national statistical website, we used an internet search engine (Google) to locate specific government ministries that might contain relevant information (eg, ministries of finance, economy, revenue, industry, manufacturing, trade, customs)

Breathing in second-hand smoke can increase the risk of lung cancer by 24% and heart disease by 25%

splines2: regression spline functions and classes

An estimated 4 million Americans use them, according to the Tobacco Vapor Electronic Cigarette Association

Heated tobacco devices heat up specially-made tobacco sticks to a precise temperature, allowing the adult user to taste the tobacco without having it burn, as it would with a cigarette