3. Frequency of components across included study arms.
| Component | n arms | % arms |
| N total arms | 845 | 100 |
| Minimal intervention | 61 | 7.46 |
| Focus | ||
| How | 574 | 67.9 |
| Why | 306 | 36.2 |
| Nature | ||
| Motivation | 518 | 61.3 |
| Self‐regulation | 648 | 76.7 |
| Adjuvant activities | 342 | 40.5 |
| Behavioural components | ||
| Counselling | 439 | 52.0 |
| Biofeedback | 48 | 5.68 |
| Hypnotherapy | 13 | 1.54 |
| Exercise | 23 | 2.72 |
| Financial incentives: guaranteed | 25 | 2.96 |
| Financial incentives: not guaranteed | 18 | 2.13 |
| Tailoring | 510 | 60.36 |
| Intervention provider | ||
| Nurse (general) | 42 | 4.97 |
| Nurse (specialist) | 26 | 3.08 |
| Stop smoking advisor | 74 | 8.76 |
| Psychologist/counsellor | 155 | 18.3 |
| Physician | 145 | 17.2 |
| Pharmacist | 9 | 1.07 |
| Dentist | 4 | 0.47 |
| Lay health advisor | 10 | 1.18 |
| Hypnotist | 10 | 1.18 |
| Exercise specialist | 9 | 1.07 |
| Other provider | 45 | 5.33 |
| Delivery mode | ||
| Group | 158 | 18.7 |
| Individual | 441 | 52.2 |
| Face‐to‐face | 457 | 54.1 |
| Telephone | 220 | 26.0 |
| Web/computer | 91 | 10.8 |
| 428 | 50.7 | |
| SMS | 31 | 3.67 |
| App | 4 | 0.47 |
| Video (static) | 29 | 3.43 |
| Video (interactive) | 4 | 0.47 |
| Audio | 15 | 1.78 |
| Interactive voice response | 22 | 2.60 |
| Quitline | 14 | 1.66 |
| 8 | 0.95 | |
| Other | 4 | 0.47 |
| Pharmacology | ||
| Nicotine replacement therapy | 213 | 25.2 |
| Bupropion | 17 | 2.01 |
| Varenicline | 5 | 0.59 |
| Other | 65 | 7.69 |
n: number.