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Table 1 Data collection at baseline visit

From: Examining the effectiveness of general practitioner and nurse promotion of electronic cigarettes versus standard care for smoking reduction and abstinence in hardcore smokers with smoking-related chronic disease: protocol for a randomised controlled trial

Demographics

Basic demographic information

Medical history

Medical problems and concomitant medication

Smoking history

Information on smoking and quitting history (age when started smoking, number of cigarettes smoked per day, when the last cigarette was smoked, type of cigarettes smoked per day (roll-ups or factory-made), usual pack/pouch size, nicotine dependence, motivation to stop smoking, self-efficacy and outcome expectancies, history of any pharmacotherapy or e-cigarette use and exhaled CO measurement)

Biological samples

Saliva samples to measure anabasine (for smoke intake) and cotinine (for nicotine intake)