B
E-cigarette adverts
(n=521)
Control adverts
(n=536)
Test statisticP valuesTotal
(n=1057)
Age—M (SD)13.46 (1.40)13.50 (1.34)0.4720.63713.48 (1.37)
Gender—male % (n)45.1 (235)48.7 (261)3.1470.07646.9 (496)
Ethnicity—White % (n)74.9 (390)73.1 (392)0.4070.52474.0 (782)
  • For all variables reported above, differences between the experimental groups were examined using χ2 tests, apart from the age variable which was examined using an independent samples t-test.