I'm about to make a meta analysis of a particular topic. I'm using Comprehensive Meta-Analysis (CMA) ver. 3.0 for that reason. However, after I input all the necessary data, the software refused to create the forest plot because the studies included have asymmetrical confidence interval.
I checked out that the default for 'allowed asymmetric CI ratio' is 1.10. I've changed the ratio to 2.0, which is the maximum input available. Even after that, there is one study that has asymmetrical CI ratio > 2.0.
What I'm asking is: 1. Is there any solution to minimize the asymmetry of the CI of the studies? 2. Is there any solution to alter the 'allowed asymmetric CI ratio' to more than 2.0 so no study will be excluded in forest plot in CMA?
If it turns out that a transformation can minimize the asymmetry of the CI, is the data still valid and presentable?