Dear all,

I had a basic question pertaining to meta-analysis of RCTs.
If we have ATEs and CIs of the same intervention from 10 different RCT studies (all standardized differences), how can we calculate the Expected ATE (standardized difference) for the 11th study which we are conducting? Is it merely a simple average of the 10 ATEs? or a weighted average? If it is weighted average, what will be the weights?

Thanks.