Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: ivprob problem


From   Harald Seider <harald.seider@wiwi.uni-augsburg.de>
To   statalist@hsphsun2.harvard.edu
Subject   st: ivprob problem
Date   Wed, 20 Nov 2002 15:48:11 -0500

Dear Statalist,

when running Joe Harness's ivprob procedure I always get an error message (conformability error). I have no clue why this procedure won't work.
I have about 250.000 observations which might be an issue. However, the error will also show up if we reduce the number of observations down to a few hundred.
The next issue might be the fact that many of our variables are dummies (d*, transfer, diag* , dum*).
Has anyone out there faced a similar problem before and know a solution for it?

ivprob mort30 ,
endog(sqrtvol)
exog(procptca d0* d1* d2* d3* d5* transfer
diagalkalos_x diagamisequ diagarterem diagasthma_x diagatheros
diagbbblk_x diagcardiomeg_x diagchf diagchrglom diagchrlive_x diagchrpulh_x
diagchrrena diagcnsdis diagcollvas diagcopd diagdbtcmp diagdbtuncm diagdeg2avb
diagdement diagepilep diagfractur diaggihemor diaghismali_x diaghrsecma
diaghtb diaghthrtf_x diaghyperli_x diagincorsy_x diaglrpmali_x diagmitvalv_x
diagnutri_x diagostarth_x diagothcva2 diagothvalv_x diagprcabg diagprevmi_x
diagpsychos diagshock_x diagsknulcr diagsyncop_x diagthyroid diagunstangina
dum*)
iv (dum* pat3rad0to3 pat4rad3to7 pat7rad7to14 pat4rad14to18 pat4rad18to22 hosprad*) ;

*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/




© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index