st: Repeated time values in panel in bootstrap routine

[David Mather <matherda@msu.edu>]

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/