This dataset serves as an example of meta-analysis of (log) relative risks.
data("dat.williams")
A data frame with 20 studies with the following 7 variables within each study.
y
point esimates of log relative risks.
s2
sample variances of log relative risks.
n1
sample sizes in treatment group 1 (medication).
n2
sample sizes in treatment group 2 (placebo).
r1
event counts in treatment group 1.
r2
event counts in treatment group 2.
n
total sample sizes.