Since e-cigarettes typically deliver less nicotine per puff than cigarettes, it is possible that the lower content of nicotine in
e-cigarettes could explain the null findings," Bandiera wrote in the paper.
The higher quit rates in Latinos and blacks may explain why mortality rates are lower in Latinos than whites, and why the mortality rate gap between blacks and
whites is getting closer," Bandiera said.
Or it could be that since e-cigarettes have been marketed as a smoking cessation device, depressed students may be using e-cigarettes to help them
quit smoking traditional cigarettes," said Bandiera, noting that there is little published clinical
research to support that e-cigarettes help people quit smoking traditional cigarettes.