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Table 2 Perceived value of programme theory to inform systematic reviews [9, 12, 16, 19,20,21, 76]

From: Use of programme theory to understand the differential effects of interventions across socio-economic groups in systematic reviews—a systematic methodology review

• Provide a theoretical basis for the review

• Aid reviewers in thinking conceptually to gain an initial understanding of the way in which the intervention is likely to work

• Assist in refining the review question and defining the scope of the review

• Identify points of uncertainty and provide the rationale for data collection and approach to synthesis

• Increase the transparency of the review process