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3 Methods

3.2 Systematic literature review on contextual factors

3.2.5 Study screening and data extraction

The evidence review of contextual factors was led by Vera Sistenich and colleagues at Harvard University. For quality assurance, a secondary peer reviewer corroborated paper screening and data extraction.

Data was screened per the following five stages:

Stage One: electronic database search using terms provided outlined in section 3.2.3 and in Appendices 1-7; number of results to be recorded and downloaded into an Endnote file (one per contextual factor), and duplicates removed.
Stage Two: title and abstract review to remove studies not meeting the inclusion criteria (see above).
Stage Three: manuscript/report review to remove studies that do not meet inclusion criteria.
Stage Four: review of references (taken from papers reviewed in Stage Three)
Stage Five: final paper selection, data extraction, and quality assessment.

Data was extracted based on specific research points noted below and input into a standardised Excel data extraction form:

  • study authors/agency, year
  • study country
  • study population type (refugee, internally displaced, entrapped population, host population)
  • humanitarian crises type (armed conflict or natural disaster)
  • humanitarian crises stage (i.e., preparedness, acute crises, stabilised, early recovery)
  • type of public health interventions
  • main aspect(s) of contextual factor influencing impact of health intervention
  • interventions influenced by contextual factor
  • character of contextual factor influence
  • study design
  • stratification (by age and/or gender)
  • use of recognised guidelines for public health intervention
  • quality of the evidence on specific interventions
  • change in quantity of evidence over time
  • change in quality of evidence over time
  • research strengths from the literature
  • research gaps from the literature
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