Weighted mean difference là gì
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J Clin Psychiatry . 2020 Sep 22;81(5):20f13681.Actions
Mean Difference, Standardized Mean Difference (SMD), and Their Use in Meta-Analysis: As Simple as It GetsChittaranjan Andrade 1 Affiliations Expand Affiliation
Item in Clipboard weighted mean difference (WMD)In a meta-analysis, when study results measured using the same scale are being combined, the difference between two means, weighted by the precision of the study. Show Note: The precision of the studys estimate of effect may, for example, correspond to the inverse of the variance. (Related concept: standardised mean difference) |