Table 1.

Process evaluation questions for assessing implementation of intervention^a

Constructs	Aims to be evaluated	Questions
Fidelity	1.To what extent was the CLIP intervention implemented consistently with the CLIP protocol? 2.To what extent was training provided as planned?	1.What constitutes as adherence for each component of the CLIP intervention? 2.What constitutes as competence for each component of the CLIP intervention?
Dose (delivered and received)	How much of the CLIP intervention was delivered? (‘dose’)	1.How many antenatal visits were delivered? 2.How many postnatal visits were delivered? 3.How many women received treatment (by MgSO4 and/or methyldopa) as per the recommendation? 4.How many women were referred to a higher level facility? 5.How many community engagement sessions were delivered to stakeholders?
	How much of the CLIP intervention was received? (‘dose received’)	1.How can participant behaviours be used to assess engagement? 2.With what specific aspects of the intervention (e.g., CLIP visits, community engagement sessions.) indicate assess participant reaction or satisfaction? 3.What are the expected follow-up behaviours: following recommendations generated in the POM mHealth tool, self-seeking regular antenatal/postnatal visits?
Reach	1.What is the reach of the CLIP intervention? 2.How are stakeholders and the community engaged in the process?	1.What are the target populations for each component of the CLIP intervention?
Adaptation	1.What were the alterations made to the CLIP intervention to adapt it to the Nigerian context?	1.How will the adaptations made in the design or delivery of the CLIP intervention be identified, tracked and monitored?
Context	1.What are the factors external to the CLIP intervention that may influence its implementation? 2.What is the cost of the CLIP intervention in Nigeria?	1.How will the contextual factors (including community, health system, sociodemographic, political factors) be identified, assessed and monitored?

^a(adapted from Saunders et al [10])