Table 1.

The realist evaluation process and data sources.

Phase	Source of data and activity
Phase 1 – Identification of programme theory or hypotheses about Context-Mechanism-Outcome (CMO) configurations	•Two systematic reviews •Interviews with four programme implementers/ policy stakeholders
Phase 2 – Testing the programme theory	•Interviews and a focus group with 21 midwives •Interviews with 17 pregnant women
Phase 3 – Refining the programme theory	•Analyses and interpretation •Refined Context-Mechanism-Outcome (CMO) configurations