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According to the World Health Organization report, about 4 million people die from smoking each year, and by 2020, the death toll is expected to reach 10 million.2 In Korea, the rate of daily smoking among adults was 20.0% in 2014, which is higher than the average daily smoking rate of 19.7% among OECD adults and the third highest among OECD member countries. The smoking rate of adults aged above 19 years decreased gradually from 66.3% in males and 6.5% in females in 1998, to 43.2% in males and 5.7% in females in 2014. The average smoking rate of males (43.2%) was higher than the total smoking rate (24.2%).3

Study of Relationship between E-Cigarette Selection Factors and Smoking Cessation Attempts