How to group data in STATA with SORT and BY

[@abcdxyz1100]

Thank you for the very simple and clear instructions and commands.

[@raulcruzquintanilla9834]

Many thanks sir very helpful video!

[@nondumisondhlovu9181]

Is it necessary to first sort the data before applying "by" because I always run "by variable, sort : command" and achieves the same outcome?

[@uclalse]

So good! Thank you!

[@souzalucasr]

You're welcome

[@adorationchigere6877]

I need assistance, please. I have a panel data of everyone that come for refill of their medications monthly. I also have longitudinal data that captures the first time they visited the facility for their medication. Now, i would like to differentiate, and calculate the total number of monthly initiations from refills. How can i do this on STATA please?

[@ishararatnayaka479]

Thank you

[@pwnisherino7414]

Thank you so much!

[@souzalucasr]

You're welcome, Tom! Thank you for leaving a comment :)

[@victorcoronel6181]

How can I group clustered variables hierarchically ordered?

[@animeshchowdhury448]

Sir, I am currently working on a meta analysis. But I am not able to produce association studies of allele contrast (A vs a). Except that all are done but can not understand how to calculate A vs a frequency. If you help me out it will help me a lot. Thanks