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Support #1839

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Combining individual level files across waves with different variables into a long format.

Added by Ingrid Storm almost 2 years ago. Updated almost 2 years ago.

Status:
In Progress
Priority:
Normal
Assignee:
-
Category:
-
Start date:
01/12/2023
% Done:

50%

Description

I am trying to follow the suggested syntax for appending individual level files across waves into a long format. However I wish to retain some variables that are not available in all the waves.

When I try to use the syntax dofile available on the website (MERGING INDIVIDUAL FILES ACROSS WAVES INTO LONG FORMAT) I get error messages when it encounters variables that are only available in some waves (e.g. "variable a_simrace not found").

I noticed on the moodle course a command called "isvar" was proposed as a solution. However, when I try this I also get an error message, saying that "the command isvar is not recognised" (I am using Stata version 17).

What do you propose?

Thank you very much for your help

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