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From | Bert Jung <bjung59@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Wanted: simulated data with cluster structure |
Date | Wed, 11 May 2011 15:04:27 -0400 |
Thanks for the heads-up Austin. I wonder if it would be useful to post (here or elsewhere) simulation code for various standardized situations? Apart from my own need, I understand from colleagues that there is both demand and confusion on these matters. Bert On Wed, May 11, 2011 at 12:06 PM, Austin Nichols <austinnichols@gmail.com> wrote: > Bert Jung <bjung59@gmail.com>: > Don't forget that your X vars (if any) also must be clustered if you > want the nonrobust SE to be incorrect on average. > > On Wed, May 11, 2011 at 8:04 AM, Bert Jung <bjung59@gmail.com> wrote: >> Thanks Stas... -expand-, of course... >> Bert >> >> On Tue, May 10, 2011 at 10:48 PM, Stas Kolenikov <skolenik@gmail.com> wrote: >>> On Tue, May 10, 2011 at 9:31 PM, Bert Jung <bjung59@gmail.com> wrote: >>>> I need a simulated dataset with clustered data to test a user-written >>>> bootstrap routine. The only important feature is that the cluster >>>> structure should lead to visibly biased standard errors in -regress- >>>> and that a -regress, cluster()- should return the correct standard >>>> error. >>> >>> Oh come on. >>> >>> set obs 20 >>> gen u = rnormal() >>> gen cl = _n >>> expand 20 >>> gen e = 0.2*rnormal() >>> gen y = u+e >>> reg y >>> reg y, cl(cl) >>> >>> -- > > * > * 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/ > * * 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/