Table 1. Research questions and corresponding methods at different study stages for the evaluation of each process domain.

Domain	Research question	Method	Study stage for data collection
Context	What is the wider context in which the trial is being conducted?What are the main health needs of migrants visiting primary care centres' (PCCs) facilities?	Focus group discussions (FGDs) with migrants and HC professionals	Preintervention
Recruitment of clusters	How are clusters sampled and recruited?Who agrees to participate?Why do clusters agree to participate (or not)?	Documentation of the recruitment process by the research teamQuantitative and qualitative comparisons of recruited and non-recruited clusters	Preintervention
Delivery to clusters	How intervention is actually delivered for each cluster?	Real-time technical monitoring by data manager	Early intervention
Response of clusters	How is the intervention adopted by clusters?	Observations and field notes by study coordinators about how clusters adopt the interventionReal-time technical monitoring by data manager	During intervention
Reach to healthcare (HC) professionals and delivery to migrant patients	To what extent is the software tool used by HC professionals and how is the intervention applied in each setting?	Quantitative comparison of those applying versus not applying the screening toolMeasurement of intervention fidelity across its componentsMini-survey of monitoring	During intervention
Response of HC professionals to the intervention	How does the HC professional respond?Can the use of the tool be sustained over time (or not)?	Surveys to HC professionals at intervention arm; interviews with PCC managersFGDs with HC professionalsInterviews with migrants who have been screened with the tool	Postintervention
Unintended consequences	Are there unintended changes in processes and outcomes related to the trial intervention?	Surveys, interviews (as above)	During intervention and postintervention

FGDsfocus group discussionsHChealthcarePCCprimary care centres