Table 5.

E-cigarette use behaviour, reasons for use and perceptions of harm; by smoking status

	Cigarette smoker	Non-smoker*	Total	P value
Use behaviour
Ever use (n=1425)
Yes	110 (71.9)	466 (36.7)	576 (40.4)	<0.001
No	43 (28.1)	805 (63.3)	848 (59.6)
Current use (n=1448)
Yes	22 (13.7)	66 (5.1)	88 (6.1)	<0.001
No	139 (86.3)	1222 (94.9)	1361 (93.9)
Daily use (n=1449)
Yes	9 (5.6)	15 (1.2)	24 (1.7)	<0.001
No	152 (94.4)	1273 (98.8)	1425 (98.3)
Daily use for a month or more (n=428)
Yes	20 (21.7)	29 (8.6)	49 (11.4)	<0.001
No	72 (78.3)	307 (91.4)	379 (88.6)
Use of nicotine (n=47)
Yes	15 (88.2)	18 (60.0)	33 (70.2)	0.042
No	2† (11.8)	12 (40.0)	14 (29.8)
Use in indoor smokefree spaces (n=266)
No	45 (69.2)	169 (84.5)	214 (80.8)	0.007
Other‡	20 (30.8)	31 (15.5)	51 (19.2)
Use in outdoor smokefree spaces (n=262)
No	40 (62.5)	154 (77.4)	194 (73.8)	0.019
Other‡	24 (37.5)	45 (22.6)	69 (26.2)
Reasons for use
To quit smoking (n=417)
Yes	6 (6.8)	4† (1.2)	10 (2.4)	0.002
No	82 (93.2)	325 (98.8)	407 (97.6)
For enjoyment (n=417)
Yes	12 (13.5)	49 (14.9)	61 (14.6)	0.738
No	77 (86.5)	280 (85.1)	357 (85.4)
Curiosity/just wanted to try them (n=417)
Yes	47 (53.4)	234 (71.1)	281 (67.4)	0.002
No	41 (46.6)	95 (28.9)	136 (32.6)
Perceptions of harm
Less harmful than cigarettes (n=1022)
Yes	76 (72.4)	702 (76.6)	778 (76.1)	0.342
Other§	29 (27.6)	215 (23.4)	244 (23.9)

The cells contain rounded weighted counts and sometimes the marginal totals are not exactly the sum of the component cells.

*Includes never smokers and smokers who smoke less than once a month.

†Expected cell count less than 5.

‡Includes sometimes, fairly often and very often.

§Includes about same as cigarettes, somewhat more harmful than cigarettes, much more harmful than cigarettes and don’t know.