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From | Daniel Schultheis <schultheis.daniel@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | st: 'XTSUR' with lagged indepvar - how to sort the data? |
Date | Wed, 3 Jul 2013 00:51:25 +0200 |
Dear Statalisters, I have a question concerning the 'xtsur'- command for unbalanced panels in Stata and cannot find the answer anywhere on the web (the question itself I found several times :-)). I am trying to use the 'xtsur' command with lagged independent variables in my panel in Stata version 12.1. For the lagged effect, I used the time series operators 'L.indepvar', 'L2.indepvar', ... , so I did not create a new variable. The panel is set with 'xtset' and and the data is sorted according to the panel-variable "ID" and the time-variable "Date2". 'xtsur' without lagged variables works perfectly fine. If I want to use xtsur with the lagged indepenendent variable, the following error message occurs: not sorted st_data(): 3598 Stata returned error _xtsurub(): - function returned error <istmt>: - function returned error. I tried to sort the data in descending order via 'gsort ID -Date2', but the same error message occured. Is there any possibility to sort or arrange my data so that I can use the 'xtsur' command to show the lagged effect via 'xtsur'? Thank you so much for your help, it is very appreciated. Best regards from Munich, Daniel * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/