Calculating Standardized Mean Difference and Standard Error in Paired or Single-Group Designs
Pre-Post Mean Difference
Standard Deviation of the Mean Difference
Correlation Coefficient
Number of pairs
Method for Estimating Standardized Mean Difference
Cohens’d (standard method)
Hedges’g (correction for small sample size
Confidence level
95%
99%
97.5%
90%
Calculate
Referemce:
[1] Michael Borenstein, and Larry V.Hedges et, al. 2013. Introduction to Meta-analysis.