Fig. 1From: Adaptive interventions to optimise the mobile phone-based smoking cessation support: study protocol for a sequential, multiple assignment, randomised trial (SMART)Study design overview. Abbreviations: R, randomisation; FU, follow-up; PIM, personalised instant messaging; RIM, regular instant messaging; OCI, optional combined intervention. Phase 1 intervention will be conducted during the first month after enrolment and phase 2 intervention will be conducted during the second and third months after enrolmentBack to article page