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

Odds-ratio and Risk-Ratio from Phi Coefficient and Marginal Distributions

Treatment

Control

Sample size (n)

Phi coefficient (r)

Proportion of full sample
with event


Odds-ratio Risk-ratio

OR =

RR =

95% C.I. =

95% C.I. =

ORlogged =

RRlogged =

vORlogged =

vRRlogged =