Table 1.

Analysis stages.

Stages	Description
Familiarisation	Full team reads documents and meets to discuss over several sessions.
Framework identification	Full team confirms coding framework, using mechanism, context and outcome and as sensitizing concepts, and macro, institutional and practitioner level as organising concepts
Coding	DM, MR, and EC collated the data into codes
	- Mechanism: explanations or justifications leading to outcomes i.e “active ingredients.” - Context: aspects that favoured or disfavoured mechanism activation - Outcome: outcomes linked to mechanisms	- Macro: national, government and policy level - Institutional: schools, hospitals and other relevant organisations level - Practitioner: individual practitioner level
Charting, mapping & finalisation	DM developed a written account of the analysis and engaged in discussions with the full team – the presentation and analysis was agreed by all authors.