Efficacy of E-Cigarettes in Tobacco Cessation and Dual Use of ENDS and Cigarettes
(Efficacy of E-Cigarettes in Tobacco Cessation and Dual Use of ENDS and Cigarettes) "Among adults, reductions in cigarettes per day were observed in several of the clinical studies83,84,86 and in 1 population-based study4 among those who did not quit. Reduction in cigarettes smoked per day could have benefit if it promotes subsequent cessation, as has been found with NRT,90 but this pattern has not yet been seen with e-cigarettes.