Table 2

Participant characteristics overall and by experimental condition

Overall
(n=1400)
%
Comparative risk messages (n=600) %Negative comparative risk messages (n=602) %Control
(n=198)
%
Gender
 Male47.045.547.251.0
 Female53.054.552.849.0
Age
 18–2917.716.019.118.7
 30–4425.625.724.927.3
 45–5931.129.032.932.3
 60+25.629.323.121.7
Race
 White81.683.081.776.8
 Black or African-American8.38.37.89.6
 Hispanic4.03.34.25.6
 American Indian or Alaska Native1.21.31.21.0
 Asian3.82.54.75.1
 Other1.11.50.52.0
Education
 Less than high school1.81.81.81.5
 High school34.434.035.233.3
 Some college33.134.331.135.9
 Bachelor’s degree or higher30.629.831.929.3
Daily smoker
 Yes61.062.361.057.1
 No39.037.739.042.9
E-cigarette use
 Current33.633.832.735.9
 Ever not current22.823.022.124.2
 Never43.643.245.239.9
Current cigarette use
 Yes, but expect to quit82.682.782.782.3
 Yes, and never expect to quit7.97.88.08.1
 No, former smoker9.49.59.39.6
Current dual user of e-cigarettes and cigarettes
 Yes31.331.730.632.3
 No68.768.369.467.7
Tried to quit in the past 12 months
 Yes49.747.350.754
 No50.352.749.346
Perceived comparative risk of e-cigarettes to cigarettes at pretest
 Less harmful38.339.036.541.4
 Equally harmful38.638.837.441.4
 More harmful7.46.58.57.1
 I don’t know15.715.717.610.1
  • No significant differences were found between conditions on participant characteristics.

  • e-cigarette, electronic cigarette.