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From | David Mather <matherda@msu.edu> |
To | statalist@hsphsun2.harvard.edu |
Subject | st: Repeated time values in panel in bootstrap routine |
Date | Wed, 23 Jun 2010 13:56:42 -0400 |
Hi all,I'm running a bootstrap routine with household-level panel data and am getting the Stata error message: "repeated time values within panel - the most likely cause for this error is misspecifying the cluster(), idcluster(), or group() option"
I've read the FAQ at http://www.stata.com/support/faqs/data/repeatedtime.html and have used its suggestions for checking for duplicate observations - I've found none. The syntax which causes the error is:
bootstrap lepmaiz=r(ape1) lresid2=r(ape2), reps(500) seed(123) cluster(hhid) idcluster(newid): myboot
where -hhid- is the household-level identifier, and -myboot- is a program that runs a probit regression and then computes the average partial effect for several variables. I've run this bootstrap syntax previously on household-level data from the same database (which used the same household-level identifier) and did not have this problem, thus I don't understand how I could have misspecified the cluster or idcluster option. I've tried clustering at the village level instead, but I get the same error message. I've also tried running the syntax on only one year of the panel, and I still get the same message. I'm wondering if anyone has any suggestions on what I might be doing wrong.
thanks, David * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/