Ever use of e-cigarettes was significantly more prevalent among males, at 18.8% (2.8 million), compared to 12.0% of females (1.8 million) (Figure 12.2).124

Similarly, e-cigarette use in the past 30 days was significantly more prevalent among males (3.6%) than females (2.2%) (Figure 12.2).125

However, the magnitude of sex differences appeared to vary by age group.

See data table below with 95% confidence intervals.

Frequency of e-cigarette use by sex 

Daily use of e-cigarettes was significantly more prevalent among males, at 1.4%, compared to 0.6% of females (Figure 12.2).126

Of those who reported ever trying an e-cigarette, similar proportions of males (19.1%)a and females (18.0%)b had used an e-cigarette in the past 30 days.127

Of those who reported using an e-cigarette in the past 30 days, the proportions of males (38.9%)c and females (25.8%)d that used one every day were not significantly different.128 The proportions of males (40.4%)e and females (34.6%)f using e-cigarettes on 20 or more of the past days also did not differ significantly.129 

Among past 30-day users of e-cigarettes, the mean number of days of use in the past 30 was similar for males (14.0)g and females (12.7)h.130


95% confidence intervals for in-text estimates

a: 19.1 [14.5-23.6] 
b: 18.0 [12.3-23.7]
c: 38.9 [26.8-51.1]
d: 25.8 [12.6-39.1]
e: 40.4 [28.1-52.6]
f: 34.6 [19.0-50.2]
g: 14.0 [10.5-17.4]
h: 12.7 [8.7-16.8]