Compared with those surveyed in weeks with less than 65% awareness, respondents surveyed in weeks with higher campaign awareness had significantly lower odds of expressing intentions to use e-cigarettes in weeks with 65–70% awareness (OR: 0.86, 95% CI: 0.77 to 0.97) and 70–75% awareness (OR: 0.85, 95% CI: 0.75 to 0.96), and approaching significance in weeks with greater than 75% awareness (OR: 0.90, 95% CI:0.79 to 1.02).
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Reducing e-cigarette use among youth and young adults: evidence of the truth campaign's impact.
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