vcov.rma {metafor} | R Documentation |
The function extracts the (estimated) variance-covariance matrix of the fixed effects parameter estimates from objects of class "rma"
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## S3 method for class 'rma': vcov(object, ...)
object |
an object of class "rma" . |
... |
other arguments. |
A matrix corresponding to the variance-covariance matrix.
Wolfgang Viechtbauer; wvb@www.wvbauer.com; http://www.wvbauer.com/
### load BCG vaccine data data(dat.bcg) ### meta-analysis of the log risk ratios using a mixed-effects model ### with two moderators (absolute latitude and publication year) res <- rma(ai=tpos, bi=tneg, ci=cpos, di=cneg, mods=cbind(ablat, year), data=dat.bcg, measure="RR", method="REML") vcov(res)