Table 6

Means, standard errors and univariate F statistics of each message condition on behavioural intentions

Comparative risk messages
Mean (SE)
Negative comparative risk messages
Mean (SE)
Control
Mean (SE)
Univariate F statistics
Full sample (current smokers and recent former smokers, n=1400)§
  Intentions to smoke cigarettes*3.34 (0.03)†3.32 (0.03)†3.50 (0.06)‡F(2, 1385)=4.42, p=0.01, ηp 2 =0.01
  Intentions to switch to e-cigarettes completely**4.59 (0.09)†4.41 (0.09)†3.94 (0.16)‡F(2, 1385)=6.25, p<0.01, ηp 2 =0.01
Current smokers only (n=1268)
  Intentions to quit6.46 (0.11)6.32 (0.11)6.32 (0.19)F(2, 1253)=0.48, p=0.62, ηp 2 =0.00
  Intentions to reduce the number of cigarettes3.18 (0.03)3.15 (0.03)3.10 (0.06)F(2, 1253)=0.89, p=0.41, ηp 2 =0.00
  Intentions to seek support2.17 (0.04)2.23 (0.04)2.31 (0.07)F(2, 1253)=1.97, p=0.14, ηp 2 =0.00
  Intentions to use nicotine replacement therapy2.51 (0.04)2.51 (0.04)2.51 (0.07)F(2, 1253)=0.004, p=0.996, ηp 2 =0.00
  • *p<0.05.

  • **p<0.01.

  • †  and ‡ - Different symbols indicate significant difference at p<0.05.

  • §  Among current smokers only, message type on intentions to smoke cigarettes became marginally significant, F(2, 1253)=2.61, p=0.07, ηp 2 =0.004; message type on intentions to switch to e-cigarettes completely remained significant, F(2, 1253)=5.66, p=0.004, ηp 2 =0.01.

  • e-cigarette, electronic cigarette.