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3 Methods

3.1 Systematic literature review on health topics

3.1.5 Study screening and data extraction

The systematic literature review for each health topic was conducted by one topic leader (see Annex 1 for further details). For quality assurance, a secondary peer reviewer corroborated study selection and data extraction at Stage Four.

Data were screened with the following five stages:

Stage One: electronic database search using terms; with results imported into reference management software, and duplicates removed.
Stage Two: title and abstract reviewed to remove studies not meeting the inclusion criteria (see above).
Stage Three: manuscript review to remove studies that did not meet inclusion criteria; paper selection.
Stage Four: review of references of selected papers (from Stage Three).
Stage Five: final paper selection, data extraction, and quality assessment.

Data was extracted based on the specific points noted below and input into a standardised Excel database:

  • study authors or agency, year
  • study country
  • setting: urban or rural
  • population type (refugee, internally displaced, entrapped population, host population)
  • humanitarian crises type (armed conflict or natural disaster)
  • health outcome(s) addressed by the public health intervention
  • type(s) of public health intervention
  • study design
  • measurement outcomes (e.g. prevalence, odds, ratios etc)
  • target age group: i) infants: under 6 months, ii) infants and young children: under two years, iii) children under five: 6 months – 59 months, iv) school age children: 6 years – 15 years, v) adolescents: 10 years – 19 years,* vi) adults: 20 years – 49 years, vii) elderly: 50+ years.
  • 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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