methods.vif.rma {metafor} | R Documentation |
Methods for objects of class "vif.rma"
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## S3 method for class 'vif.rma' as.data.frame(x, ...)
x |
an object of class |
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other arguments. |
Wolfgang Viechtbauer wvb@metafor-project.org https://www.metafor-project.org
Viechtbauer, W. (2010). Conducting meta-analyses in R with the metafor package. Journal of Statistical Software, 36(3), 1–48. https://doi.org/10.18637/jss.v036.i03
### copy data into 'dat' dat <- dat.bcg ### calculate log risk ratios and corresponding sampling variances dat <- escalc(measure="RR", ai=tpos, bi=tneg, ci=cpos, di=cneg, data=dat) ### fit mixed-effects meta-regression model res <- rma(yi, vi, mods = ~ ablat + year + alloc, data=dat) ### get variance inflation factors for all individual coefficients sav <- vif(res) sav ### turn object into a regular data frame as.data.frame(sav) ### get VIFs for ablat and year and the generalized VIF for alloc sav <- vif(res, btt=list("ablat","alloc","year")) sav ### turn object into a regular data frame as.data.frame(sav)