Forest Plot

Forest Plot: graphical representation of a meta-analysis

  • usually big studies draw the report
  • Bigger studies tend to have a smaller standard error



  • Know what outcome you are measuring
  • Horizontal entries represents studies included but does not mean all the studies that were found in the search
  • Tips of the diamond refer to the confidence interval
  • Size of square = weight in analysis
  • Weighting is based on inverse variance – low variance = high precision = higher weight
  • Narrower CI = proportional to N



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