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Hello George,
Thanks for providing insight and explanation in form of codes for undertaking meta-analysis of combined IPD and AD data structure. Now it is clear as how to define IPD and AD in the same data and to constraint the varinace of AD. Thanks once again.
Best wishes
satpal

Dear George,
I used you example and replicated results as you shown by you. I think this is a good method for meta-analysis of aggregate data. However, my query is as how to use similar methodology for three level data structure and to constraint the within trial variance for only those studies ...

Dear George,
I would like to first apologies for my delayed response to your post. Actually I was figuring out as how to constraint the within trial variance for studies which provided only aggregate data. In case of proc mixed procedure of SAS software, we can use parms statement with hold/eqcons ...

Hi
I am doing a meta analysis of longitudinal studies involving continuous outcome response. Out of total 10 eligible studies, 8 studies provided individual participant data (IPD) whereas aggregate summary statistics (effect size and standard error) is available from two other 2 studies. For IPD ...

Hi
Can we extend Realcom Impute (through stata realcomImpute commands) to three level data structure. For example in case of one-stage meta analysis of longitudinal studies where repeated measurements (level 1) nested within individual (level 2), which are further nested in studies (level 3 ...

Hi George,
It worked perfectly. Thanks a lot for the help.
Best Regards
Sandhu

Hi George and Jamie,
I was thinking about the same i.e how to combine runmlwin, REALCOM imput and MLwiN.
The thing is that i can do multiple imputations using REALCOM impute through realcomimpute Stata command and could successfully use mi estimate: xtmixed..... in stata to analyze multiple ...