NCT01893502.

Trial name or title	Smoke‐free randomised controlled trial
Methods	RCT, parallel assignment, single masking
Participants	11 Singaporean current smokers among outpatients, including hospital employees, who provide informed consent for enrolment in the smoking cessation programme
Interventions	Proactive telephone counselling weekly for 6 months
Outcomes	7‐day point prevalence assessed after 6 months of follow‐up
Starting date	June 2013
Contact information	kay_choong_see@nuhs.edu.sg
Notes