NCT02421991.

Study name	Telephone‐delivered interventions for smoking cessation (TALK)
Methods	Study design: RCT Location: USA Setting: not reported Recruitment: not reported Study dates: 2015‐19
Participants	N = 1275 Specialist population?: no Definition of smoker used: ≥ 10 cpd for at least the past 12 months
Interventions	Comparator: CBT Mode of delivery: telephone Intensity: 5 weekly sessions Pharmacotherapy: NRT Type of therapist/provider: not reported BCTs: 3.1 Social support Intervention: Acceptance and Commitment Therapy (ACT) Mode of delivery: telephone Intensity: 5 weekly sessions Pharmacotherapy: NRT Type of therapist/provider: not reported BCTs: 3.1 Social support (note: full details of therapy not provided)
Outcomes	Definition of abstinence: 30‐day point prevalence Longest follow‐up: 12 months Biochemical verification: not reported Other relevant outcomes: none
Starting date	2015
Contact information	Jonathan B Bricker, Ph.D. Fred Hutchinson Cancer Research Center
Notes	Contacted PI for update: no update to report Funding source: not reported Author conflicts of interest: not reported