Current smokers and recent ex-smokers | 1. Current smoking behaviour (or past smoking behaviour in those that have recently stopped) |
2. Current motivation to quit smoking using the Motivation to Stop Scale [27] | |
3. Use of nicotine replacement therapy while smoking | |
4. Current (or past) nicotine dependence using the Fagerström Test for Cigarette Dependence [29] | |
5. Exposure to health professionals’ advice on quitting | |
6. Current (or past) strength of urges to smoke [30] | |
7. The number of serious quit attempts recalled as having been made within the past 12 months | |
8. For the most recent quit attempt within the past 12 months: a. how long-ago the quit attempt started b. how long it lasted c. any aids used (e.g., nicotine replacement therapy over-the-counter, telephone helpline) d. what triggered it (external and internal triggers) e. whether it involved cutting down gradually f. and whether it was planned in advance [7] | |
E-cigarette users | 1. Usage behaviour and its development |
2. Starting age and reasons for e-cigarette use | |
3. Type, place of purchase and average consumption of liquid and nicotine in e-cigarettes |