Practical Meta-Analysis Effect Size Calculator
David B. Wilson, Ph.D., George Mason University

Select one:
Ignore between sub-group variance
Add between sub-group variance to pooled SD

Treatment

Mean

SD

N

Sub-group 1

Sub-group 2

Sub-group 3

Sub-group 4

Sub-group 5

Sub-group 6

Sub-group 7

Sub-group 8

Sub-group 9

Control

Mean

SD

N

Sub-group 1

Sub-group 2

Sub-group 3

Sub-group 4

Sub-group 5

Sub-group 6

Sub-group 7

Sub-group 8

Sub-group 9



d =

95% C.I. =

v =