Table. Harm Perceptions of e-Cigarettes Compared With Cigarettes Among Current Smokers in England Before (January to July 2019) and After (August to December 2019) the Outbreak of Vaping-Associated Lung Injury.
| Harm perception | Smokers, No. (%) [95% CI] | Unadjusted risk ratio (95%CI) | P value | Adjusted risk ratio (95%CI)a | P value | |
|---|---|---|---|---|---|---|
| Before outbreak (n = 1833) | After outbreak (n = 1382) | |||||
| Less harmful | 678 (37.0) [34.7-39.3] | 427 (30.9) [28.5-33.4] | 0.83 (0.76-0.92) | <.001 | 0.81 (0.74-0.90) | <.001 |
| Equally harmful | 731 (39.9) [37.7-42.2] | 605 (43.8) [41.2-46.4] | 1.10 (1.01-1.19) | .01 | 1.09 (1.01-1.18) | .02 |
| More harmful | 233 (12.7) [11.2-14.3] | 238 (17.2) [15.3-19.3] | 1.36 (1.15-1.61) | <.001 | 1.38 (1.17-1.62) | <.001 |
| Don’t know | 191 (10.4) [9.1-11.8] | 112 (8.1) [6.8-9.7] | 0.78 (0.63-0.98) | .03 | 0.78 (0.62-0.97) | .03 |
a
Adjusted analyses included sex, age, social grade, race/ethnicity, and e-cigarette use as covariates.