Perceived risk was assessed by asking “How much do you think people risk harming themselves when they do each of the following activities?” for “Use an e-cigarette once in a while” and “Use an e-cigarette on a regular basis” (Figure 12.10).

Overall, the majority of students in grades 7-9 perceived “slight” or “moderate” risk of using e-cigarettes with nicotine “once in a while”, but “moderate” or “great” risk of regular use.

Significantly more ever-users of e-cigarettes perceived “no risk” of using e-cigarettes with nicotine once in a while (20.5%a) or on a regular basis (8.5%b), compared to never users (7.5%c and 5.4%d, respectively).169,170

Compared to e-cigarettes with nicotine, youth appeared to perceive using e-cigarettes without nicotine as having lower risk of harm (Figure 12.11).

Overall, the majority of students in grades 7-9 perceived “no risk” or “slight” risk of using e-cigarettes without nicotine “once in a while”, but “slight” or “moderate” risk of regular use.

Significantly more ever-users of e-cigarettes perceived “no risk” of using e-cigarettes without nicotine once in a while (52.7%e) or on a regular basis (31.0%f), compared to never users (23.1%g and 12.8%h, respectively).171,172

Bar chart showing perceived risk of using e-cigarettes with nicotine, on a regular basis and once in a while, grades 7 to 9, from 2018 to 2019. Trends described in text. Data table below with 95% confidence intervals.

Bar chart showing perceived risk of using e-cigarettes without nicotine, on a regular basis and once in a while, grades 7 to 9, from 2018 to 2019. Trends described in text. Data table below with 95% confidence intervals.

 

95% confidence intervals for in-text estimates

a: 20.5 [17.4-23.6]
b: 8.5 [7.1-9.9]
c: 7.5 [6.8-8.2]
d: 5.4 [4.8-6.0]
e: 52.7 [48.5-56.8]
f: 31.0 [28.8-33.1]
g: 23.1 [22.1-24.1]
h: 12.8 [11.9-13.6]