Participant demographic characteristics, e-cigarette use and tobacco smoking prevalence of full sample
| Control (n=201) | Flavoured ads (n=206) | Non-flavoured ads (n=191) | Total (n=598) | |
|---|---|---|---|---|
| Age—M (SD) | 13.13 (1.43) | 13.10 (1.47) | 13.27 (1.47) | 13.16 (1.46) |
| Gender—female, % (n) | 48.8 (98) | 49.5 (102) | 46.1 (88) | 48.2 (288) |
| Ethnicity—white, % (n) | 74.1 (149) | 80.1 (165) | 82.2 (157) | 78.8 (471) |
| E-cigarette awareness—yes, % (n) | 87.6 (176) | 87.4 (180) | 90.6 (173) | 88.5 (529) |
| E-cigarette use—yes, % (n) | 11.4 (23) | 11.7 (24) | 13.6 (26) | 12.2 (73) |
| Cigarette use—yes, % (n) | 9.5 (19) | 7.8 (16) | 10.5 (20) | 9.2 (55) |
| Cigarette experimentation—yes, % (n) | 14.9 (30) | 9.2 (19) | 14.1 (27) | 12.7 (76) |