Contents
What is a meta-analysis of proportions?
ducting a meta-analysis of proportions, in which a number of common practices that possibly. lead to biased estimates and misleading inferences are highlighted (e.g., not taking study size. and within-group estimates of between-study variance into consideration when calculating.
Is meta-regression the same as meta-analysis?
Meta-regression is defined to be a meta-analysis that uses regression analysis to combine, compare, and synthesize research findings from multiple studies while adjusting for the effects of available covariates on a response variable.
How many studies are needed for meta-regression?
Two studies
Two studies is a sufficient number to perform a meta-analysis, provided that those two studies can be meaningfully pooled and provided their results are sufficiently ‘similar’.
What is a forest plot in a meta-analysis?
A forest plot, also known as a blobbogram, is a graphical display of estimated results from a number of scientific studies addressing the same question, along with the overall results. The overall meta-analysed measure of effect is often represented on the plot as a dashed vertical line.
How to calculate a proportion in a MetaProp?
This function provides methods for fixed effect and random effects meta-analysis of single proportions to calculate an overall proportion. Note, you should use R function metabin to compare proportions of pairwise comparisons instead of using metaprop for each treatment arm separately which will break randomisation in randomised controlled trials.
When to use metabin instead of MetaProp in R?
Note, you should use R function metabin to compare proportions of pairwise comparisons instead of using metaprop for each treatment arm separately which will break randomisation in randomised controlled trials. The following transformations of proportions are implemented to calculate an overall proportion:
What is the function of the MetaProp function?
See function metabias. A logical indicating whether results for transformed proportions (argument sm != “PRAW”) should be back transformed in printouts and plots. If TRUE (default), results will be presented as proportions; otherwise transformed proportions will be shown.
How to do a meta regression in R?
Meta-regression for objects of class meta. This is a wrapper function for the R function rma.uni in the R package metafor (Viechtbauer 2010). metareg ( x, formula, method.tau = x$method.tau, hakn = x$hakn, level.comb = x$level.comb, intercept = TRUE,