Who enrolled in a randomized controlled trial of quitline support? Comparison of participants versus nonparticipants

Understanding the characteristics of smokers who enroll in a trial of quitline support and those who decline could guide recruitment approaches and service delivery to better engage smokers and increase successful quitting. However, it is unknown whether factors such as smokers' perceived effectiveness of using quitting aids or self-exempting beliefs are associated with quitline uptake. We compared the sociodemographic characteristics, smoking behaviours, perceived effectiveness of using quitting aids, and self-exempting beliefs of participants and nonparticipants who were actively telephoned and offered quitline support as part of a randomized controlled trial.