Evidence for priming effects of the relationship between industry perceptions and smoking behaviour among 12–17 year olds
| Type of state campaign | Odds ratio of interaction term between time period and perception of the tobacco industry | Difference in trends (p value) | ||
|---|---|---|---|---|
| Period 1 | Period 2 | Period 3 | ||
| This table shows the odds ratio between the index of beliefs about the tobacco industry and smoking in the past 30 days, controlling for media use and GRPs of exposure to truth® ads in the media market, and demographic and background variables (for example, age, sex, race/ethnicity, living with both parents, religiosity, employment, and weekly earnings) and a control variable for the number of months since baseline. | ||||
| *Odds ratio significantly different from zero at the p<0.05 level. | ||||
| †Significant difference between campaign and non-campaign states, p<0.05. | ||||
| Current smoking | ||||
| Established states | 0.835* | 0.814* | 0.733* | |
| Newer states | 0.821* | 0.724* | 0.767* | |
| All campaign states | 0.862*† | 0.780* | 0.756* | 0.005† |
| All other states | 0.731*† | 0.804* | 0.774* | |