Table 1.

Overview of the randomized controlled trial inclusion and exclusion criteria, including rationale.

Criteria			Rationale
Inclusion criteria
	Participants are currently smoking	To test the primary hypothesis that the DA will have a positive effect on smoking cessation, it has to be tested among smokers
	Participants are motivated to stop smoking within 6 months	As smokers unmotivated to quit cannot be expected to be willing to consider the use of cessation assistance
	Participants are 18–100 years old	As the DA was developed for adults
	Participants are able to understand Dutch	To ensure that participants understand all provided information
	Participants have access to the internet and have the necessary internet literacy (skills) to use the intervention	As the DA is fully online, participants need both access to the internet and the necessary internet literacy (skills) to access and use the DA
Exclusion criteria
	Participants exclusively use e-cigarettes	As there is no consensus on whether cessation assistance tools can be used to cease e-cigarette use