Closed syed-osman closed 3 years ago
Hi Syed,
I think it is because there are too few pre-treatment periods. You can check out trajectory balancing http://yiqingxu.org/software.html to deal with this problem if you are interested.
Best, Yiqing
On Thu, Sep 27, 2018 at 4:18 PM syed-osman notifications@github.com wrote:
Hi, I have data from 2008 to 2015 and pre-treatment period is 2008-2010. I get the following error message.
Error in gsynth.default(formula = NULL, data = data, Y = Yname, D = Dname, : All treated units have been removed
Any suggestion? Thanks in advance! Syed
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-- Yiqing Xu
Assistant Professor Department of Political Science University of California, San Diego http://yiqingxu.org/
Hi, Is there a way to go forward with it anyways?
Probably need to gatter more data (units with long pretreatment periods).
Hi, I have data from 2008 to 2015 and pre-treatment period is 2008-2010. I get the following error message.
Error in gsynth.default(formula = NULL, data = data, Y = Yname, D = Dname, : All treated units have been removed
Any suggestion? Thanks in advance! Syed