metareg PREVALENCE STUDY

#1
Hi to everybody.
I am a beginner in STATA and do not understand how to write syntax for the meta-analysis command using the variables in my research study. Any help would be so greatly appreciated!
I've to do a metaregression analysis of Prevalence study.
The aim of the study is: prevalence of ASD (AUTISM) with bipolar disorder. As regard the "metaprop" (a meta analysis of proportion) command it was easily applied.
Instead, I am finding so difficult to apply the metareg command. The effect of moderator ( percent female, intellectual disability ) were assessed using random-effects meta regression analysis (univariate and multivariate). I don't know how to apply this instruction. I study the command metareg however with no results.
metareg depvar [ indepvars] wsse (varname)......, [eform grapgh]

How to apply this command to this data example?
ps It is not an homework... I WOULD LIKE ONLY AN EXPLANATION ON HOW TO APPLY THE COMMAND. PS EMPTY CELLS INDICATES DATA NOT AVAILABLE Thanks a million to everybody

How to apply this command to this data example?
Thanks to everybody
 

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