Röver, ChristianChristianRöverFriede, TimTimFriede2022-09-012022-09-012022-09https://resolver.sub.uni-goettingen.de/purl?gro-2/113646The variance-stabilizing Freeman-Tukey double arcsine transform was originally proposed for inference on single proportions. Subsequently, its use has been suggested in the context of meta-analysis of proportions. While some erratic behavior has been observed previously, here we point out and illustrate general issues of monotonicity and invertibility that make this transform unsuitable for meta-analysis purposes.enCC BY 4.0http://creativecommons.org/licenses/by/4.0/journal_article10.1002/jrsm.1591Freeman–Tukeyprevalencesproportionsvariance stabilizing transform