cigarette pack messages about toxic chemicals: a randomised clinical trial - adhesive label manufacturers

The United States can ask tobacco companies to disclose information about harmful and potentially harmful chemicals in cigarette smoke, but the impact of this information is uncertain.
We are trying to evaluate the effect of placing information about toxic chemicals on cigarette packaging of smokers.
Methods from September 2016 to March 2017, 719 adult smokers were recruited from California.
We randomly assign smokers to receive factual information about chemicals in cigarette smoke and their health hazards (intervention)
Or information about not throwing cigarette butts (control)
Stayed next to their cigarette case for 3 weeks.
The main result of the trial was the intention to quit smoking.
Result of intentionto-
Treatment Analysis, at the end of the trial, smokers with chemical information packed did not have a higher intention to quit smoking than smokers with control information packed (P=0. 56).
Compared with control information, chemical information leads to a higher awareness of chemicals (28% vs 15%, P