Table 1. Adulta E‐cigarette use in various countries
CountryYearCurrent smoker (%)Ever usersCurrent usersa
Total (%)Nonsmoker (%)Current smoker (%)Ex smokera (%)Total (%)Nonsmoker (%)Current smoker (%)Ex smokera (%)
USA1201412.63.247.655.43.70.415.922.2
Australia (NSW)220158.43.236.5N/A1.30.74.9N/A
Canada320138.53.037.35.11.80.39.60.9
UK4201218.85.30.540.13.81.60.1131.1
Korea5201324.16.60.721.84.81.10.20.34
New Zealand6201416.213.13.449. 98.40.80.14.00.1
Japan7201520.56.63.5118.37.71.290.63.21.75
  • a Definition of “adult”, “current use”, and “ex‐smoker” differs between studies. Ever Use is define as having ever tried an E‐cigarette even once1‐6. 1Dockrell et al. 2013; 2Harrold et al. 2015; 3Reid et al. 2015; 4Schoenborn and Gindi 2015; 5Lee et al. 2016; 6Li et al., 2015; 7Tabuchi et al. 2016).