Epi

Weighted Mean Difference

search

Weighted Mean Difference

  • See Also
  1. Odds Ratio
  2. Relative Risk
  • Definition
  1. Weighted Mean Difference (WMD)
    1. Used in meta-analysis for continuous numerical measurements
    2. Each study in a meta-analysis is weighted based on variance
  • Interpretation
  1. Weighted Mean Difference (WMD) >0 suggests benefit to an intervention (if Confidence Interval does not the 0-line)