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. 2018 Apr 23;15(4):830. doi: 10.3390/ijerph15040830

Table 2.

Knowledge and beliefs about e-cigarettes, N = 69 adolescents.

Ever-Users M ± SD or n (%) Never-Users M ± SD or n (%) p
Knowledge 3.52 ± 1.46 4.00 ± 1.84 0.23
   Usually contains nicotine, an addictive chemical 28 (85%) 29 (81%) 0.76
   Liquid contains harmful chemicals 20 (61%) 26 (72%) 0.32
   May harm teen brain development 15 (45%) 19 (53%) 0.63
   Have unknown long-term health effects 25 (76%) 26 (72%) 0.79
   Are not risk-free 16 (48%) 25 (69%) 0.09
   Use liquid that is made from tobacco 12 (36%) 19 (53%) 0.23
Risk beliefs—Perceived risks 2.79 ± 0.87 3.48 ± 0.83 0.001
   Health worry 3.18 ± 1.20 3.80 ± 1.11 0.031
   Health consequences 3.06 ± 0.94 3.56 ± 1.10 0.049
   Addiction 2.12 ± 1.25 3.10 ± 0.98 <0.001
Risk belief—Perceived relative risk 1.94 ± 0.83 2.31 ± 0.82 0.07

Note: Statistically significant p values in bold.