I am performing a meta-analysis of proportions, I have data about the number of cases and the total sample sizes.
I will be using the Freeman-Tukey double arcsine (Freeman & Tukey, 1950; Miller, 1978) to adjust the proportions so that they are between 0.2 and 0.8.
But when I plot data with confidence interval, the confidence intervals are so small and the I square is 100%? what is the problem?
Note: am using R