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This method considers factors like the estimated prevalence of e-cigarette use among secondary school students in Thailand (p=0.072, derived from a previous study 29 ), the desired margin of error (0.0072, representing 10% of the estimated proportion), the significance level (=0.05), and a cluster effect of 1.2 to account for students being nested within schools

They also say that a year after quitting, the risk of heart attack will have halved compared with a smoker's and that after ten years, the risk of death from lung cancer will have halved compared with that of a smoker.

How many cigarettes are in a pack and carton of Winston Blue

Right now, he said, about 1.5 percent of tobacco tax revenue goes to such campaigns