Table 2

Raw scores for the smoking and e-cigarette outcome measures for the four study groups varying in the visibility (high, low) and proportion of images (high, low) to which children were exposed

High visibility; high proportionHigh visibility; low proportionLow visibility; high proportionLow visibility; low proportionTotal
Susceptibility to smoking—yes* (n, %)64 (34%)50 (28%)82 (38%)61 (31%)257 (33%)
Susceptibility to using e-cigarettes—yes† (n, %)76 (36%)61 (31%)74 (34%)63 (30%)274 (33%)
Perceived harm of smoking—low‡ (n, %)72 (29%)69 (27%)54 (21%)42 (17%)237 (23%)
Perceived harm of e-cigarette use—low‡ (n, %)97 (39%)92 (36%)91 (35%)78 (31%)358 (35%)
  • *Scored ≥1 total to three questions relating to their smoking susceptibility, n=781 (never smokers only).

  • †Scored ≥1 total to three questions relating to their susceptibility to using e-cigarettes, n=825 (never vapers only).

  • ‡Low perceived harm includes ‘not very dangerous’ (1) and ‘slightly dangerous’ (2) responses on a 5-point scale (1=not very dangerous to 5=very dangerous) of perceived harm n=1022 (all children).