Results of OLS models: flavour and demographic characteristics predicting the perception of harm of e-cigarettes
| Variables | Model 5: lung cancer | Model 6: second-hand vapour | Model 7: addictive | Model 8: healthy |
| Flavours | ||||
| Menthol | −0.945*** | −0.888*** | 0.486*** | 0.653*** |
| (0.066) | (0.056) | (0.082) | (0.048) | |
| Fruit | −1.464*** | −1.520*** | 1.259*** | 1.242*** |
| (0.088) | (0.075) | (0.105) | (0.070) | |
| Candy | −1.458*** | −1.464*** | 1.220*** | 0.688*** |
| (0.087) | (0.072) | (0.104) | (0.052) | |
| Alcohol | −0.866*** | −0.716*** | 1.115*** | 0.300*** |
| (0.070) | (0.054) | (0.082) | (0.041) | |
| Select control variables | ||||
| Female | 0.565*** | 0.412** | 0.287** | −0.596*** |
| (0.122) | (0.137) | (0.099) | (0.116) | |
| Never heard of e-cigarette | −0.383 | −0.122 | −0.217 | 0.263 |
| (0.242) | (0.247) | (0.205) | (0.216) | |
| Ever tried combustible cigarettes | 0.077 | −0.073 | 0.300* | 0.122 |
| (0.182) | (0.212) | (0.134) | (0.177) | |
| Ever tried e-cigarettes | −0.418* | −0.824*** | −0.184 | 0.518** |
| (0.190) | (0.217) | (0.150) | (0.185) | |
| Ever tried JUUL | −0.195 | −0.800*** | −0.067 | 0.143 |
| (0.158) | (0.180) | (0.122) | (0.157) |
Notes: The number of respondents is 1610. The dependent variables (risk dimensions) presented in this table are averaged across all five possible flavours for each respondent. Therefore, there are 8050 observations (5 flavour values for each 1610 respondents). Although not shown, all models included variables for race/ethnicity, rural/urban location, parental education, free lunch status, school satisfaction and parental cigarette, JUUL and e-cigarette use. Standard errors are clustered by individual and are reported in parentheses below each estimate. All regressions included a constant, age indicators and state fixed effects. Age was not a significant predictor of risk perception. Tobacco is the omitted (base) flavour category.
***P<0.001, **P<0.01, *P<0.05.