Vickerman 2021.

Study name	A behavioral smoking cessation intervention for Quitline callers who also use e‐cigarettes
Methods	Design: RCT, pilot Recruitment: Callers to Oklahoma Tobacco Quitline  Setting: Oklahoma, USA
Participants	96 61% female. Mean age 40.6. Mean cpd 19.2   48% daily vapers (vs. non‐daily), 85% daily smokers (vs. non‐daily), and smoked 19.2 cigarettes per day on average (SD = 11.3)
Interventions	A novel enhanced e‐cigarette coaching (EEC) intervention for individuals who both smoked and vaped at Oklahoma Tobacco Quitline enrolment was compared to standard quitline treatment (control) Both groups received NRT All requested and were sent NRT (EEC: 100%) Both groups received 5 coaching calls  EEC treatment used a shared decision‐making model for quit plan development and included vaping education, behavioural support, and 2 quit guides for vapers. The EEC treatment goal was smoking abstinence; quitting vaping was not a primary target
Outcomes	Treatment engagement and acceptability were primary outcomes in this feasibility pilot. Self‐reported smoking abstinence at 3 months was examined as an underpowered secondary outcome
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