Yang 2016.

Methods	3‐arm RCT
Participants	Participants: patients with COPD who are nicotine dependent (N = 146). Age range: not reported Recruitment: COPD patients undergoing quitting smoking intervention were randomly selected between October 2014 and September 2015 by prospective design. Country: China
Interventions	Intervention: drug (varenicline tartrate) with WeChat group Controls: drug group (varenicline tartrate) and non‐drug group
Outcomes	Health behaviours: 7‐day point withdrawal rates and sustained withdrawal rates
Notes	Not in English, very little detail provided on intervention and control group components as well as study methods, no start date reported

BMI: body mass index; MET: metabolic equivalent; RCT: randomised controlled trial; SD: standard deviation.