Procedures
All participants were forwarded the consent form before their visit to the University of Hawaii Cancer Center. Participants completed the consent form during the 1-hour visit and before survey administration. They brought in the cigarettes they regularly smoked to verify whether they were menthol or nonmenthol. A saliva sample was collected using standard passive drool procedures, aliquoted, and stored ay – 80℃. Using the Bedfont Micro + smoker-lyzer carbon monoxide monitor (Bedfont Sci-entific Ltd., Maidstone, UK), we collected expired carbon monoxide from each participant.
Trained research staff provided instructions to participants to complete the online survey in the translational research lab. All participants received a 40 gift card and a 1-page fact sheet on quitting smoking at the end of the 1-hour study