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Table 3 Comparisons of least square means for perceptions of e-cigarettes, thoughts about not using e-cigarettes, and behavioral intentions to use e-cigarettes based on main effects for ad/warning condition and brand

From: An experimental study of the effects of electronic cigarette warnings on young adult nonsmokers’ perceptions and behavioral intentions

  Perceived harms of e-cigarettes Perceived addictiveness of e-cigarettes Perceived harms of e-cigarettes relative to cigarettes Perceived addictiveness of e-cigarettes relative to cigarettes Thoughts about not using e-cigarettes Intentions to use e-cigarettes
  M SE M SE M SE M SE M SE M SE
Experimental condition             
 Ad onlya 2.53C .07 2.82C .07 2.04 .06 2.46C .06 3.16B,C .13 1.49 .05
 Ad with warningb 2.74C .07 3.00C .07 2.07 .06 2.59 .06 3.88A,C .13 1.58 .05
 Warning onlyc 3.02A,B .07 3.25A,B .07 2.24 .06 2.77A .06 5.50A,B .13 1.44 .05
E-cigarette brand             
 BluD 2.75 .07 3.05 .07 2.08 .06 2.64 .06 4.24 .13 1.52 .06
 MarkTenE 2.85 .07 3.04 .07 2.16 .06 2.54 .06 4.30 .13 1.45 .05
 VuseF 2.71 .07 2.99 .06 2.11 .06 2.65 .06 4.00 .13 1.53 .05
  1. Covariates included ever e-cigarette use and e-cigarette advertising exposure. Means with different superscript letters within a column differ significantly at p < .05 in pair-wise comparisons after Tukey’s adjustment