Dear all!
I have another question and I was wondering if you could enlighten me.
I want to run an analysis that has 2 independent variables, 3 mediators, and 1 outcome variable.
One of the issues that I am having is that, because of my inclusion criteria, I do not have studies that included correlations between two mediators. This means, that I cannot estimate the pooled correlation matrix hence it is impossible to run the full model.
Is it possible to somehow impute this correlation or use the correlation that was found in another study? I do have sufficient data in all other correlations, it's only this one.
An alternative would be to basically include as part of sample of the study other studies that have these correlations, but then I feel I would need to do the same for all other variables, and the process would never end...
I hope I was able to make myself clear?
Cheers!
Max