Introduction
Research aim, objectives
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Document the interventions implemented to develop good performance in CHVs
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Identify the mechanisms that explain how the interventions contribute to CHVs’ performance
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Investigate the circumstances that trigger these mechanisms
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Develop plausible explanations on why and how the interventions contribute (or not) to improve CHVs’ performance
Methods
The methodological approach
Mechanism | Element of the reasoning of the actor facing an intervention (beliefs, values, desires and cognitive processes). A mechanism (1) is generally hidden, (2) is sensitive to context variations and (3) produces outcomes. |
CMO configuration | Conceptual tool to link the elements of context, mechanisms and outcomes of an intervention |
Programme theory | Set of hypotheses that explain how and why the intervention is expected to produce outcomes. It can be broken down in the form of one or more CMO configurations. |
Middle-range theory | Level of theoretical abstraction that provides an explanation of semi-regularities in the CMO interactions of a set of interventions |
Demi-regularity | A demi-regularity is a semi-predictable pattern or pathway of programme functioning |
Juxtaposition, reconciling, adjudication and consolidation of sources of evidence and situating sources of evidence | -Juxtapose, to place two or more things (evidence fragments) together, especially in order to suggest a link between them or emphasise the contrast between them -Reconcile, to make two or more apparently conflicting things (evidence fragments) consistent or compatible -Adjudicate, to make a judgement about methodological quality or applicability in this instance and account for this judgement based on findings from the use of the critical appraisal tool, or an explicit argument about why a piece of evidence was not applicable -Consolidate, to bring together. In a realist synthesis, ‘to bring together into a more coherent whole’ -Situate, to place something (a piece or pieces of evidence) in a context or set of circumstances and show the connections (between it/them and other evidence fragments) |
Step 1—identifying potential theories
Step 2—searching for evidence
Step 3—appraising primary studies
Inclusion criteria | Exclusion criteria |
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Published articles examining the various aspects of CHVs’ performance in the context of community health interventions that target poor populations with unmet health needs and where CHVs: • are engaged on a voluntary basis in a formal organisational setting (with professional engagement in recruitment, training or support) • do not have a formal medical background • are recognised as members of the community | Published articles examining volunteers who undertake support and education activities informally without professional direction, such as true natural helpers and expert patients Published articles not reporting on the outcome of interest (CHVs’ performance) Published articles not addressing the research questions and/or not contributing to the development of candidate theories, refinement and/or clarification (CMOs configuration development) |
Step 4—extracting data
Step 5—analysing and synthesising evidence
Stage of the analysis and synthesis | Activities | Analytical process | Use of candidate theories |
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Evidence drawn from each primary study | Identification of the link between context, mechanism and outcomes Specification of CMO(s) configuration | Mix of abductive and retroductive reasoning Constant comparative analysis | To guide the analytical process |
Synthesis of data within or across primary studies | Identification of potential explanatory patterns | Juxtaposition, reconciling, adjudication, consolidation of sources of evidence Situating sources of evidences | To explain at a higher level the explanatory patterns that emerged across the studies |
Results
Study characteristics
Interventions implemented to develop a pool of well-performing CHVs in the primary studies
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Approaches involving the positioning of the CHV within the beneficiary community through explicit selection of CHVs by the community and positioning the CHV as a role model
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Training of CHVs that involves provision of knowledge and skill-based training, including ongoing or refresher training
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Delivery of compensation and recognition for the work of CHVs through the provision of monetary and non-monetary incentives
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Establishment of clear roles (roles made clear to CHVs, other health workers and beneficiary communities), supervision and logistical support for task distribution and implementation