Table 1.

Study research questions

Specific Research Questions	Relevant objective
1. What are the supply and demand mechanisms, including costs, by which CHW programmes can improve equitable access to quality MCH care in Nigeria?	1–3
2. What are the relationships between the different components of successful CHW programmes?
3. Which contextual factors determine whether intervention mechanisms lead to intended outputs, and subsequently outcomes, in Nigeria?
4. Which contextual factors determine whether the programme outputs and outcomes are sustained following withdrawal of targeted support?
5. In what ways do different advocacy and lobbying efforts influence the entrenching of MCH on the political agenda?	4
6. In what ways do the entrenchment of MCH on the political agenda influence the provision of MCH services in Anambra State?
7. What lessons for scaling up and sustainability can we learn from the assessment of implementation of CHW programme, during and after targeted support?	3, 5
8. What wider lessons can other programmes, and other countries, learn from the implementation of CHW programmes during and after targeted support in Nigeria?