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| From | Austin Nichols <austinnichols@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: Error after using RD command |
| Date | Tue, 9 Aug 2011 15:06:02 -0400 |
sherry <shirins@email.arizona.edu>: You may have a small number of observations within the specified bandwidth, effectively estimating a linear regression on one side of the discontinuity using one or two observations. Check your data. You may want to use a wider bandwidth. Or better, acquire more data. Note that -rd- is from SSC and the Statalist FAQ advises you to give the provenance of user-written commands. On Tue, Aug 9, 2011 at 1:20 PM, sherry <shirins@email.arizona.edu> wrote: > Hi all, > > I have used RD command and for two bandwidths, I have received the following > error: > > using -ivreg- to estimate due to failure of -suest- > > In the result box the estimators for numerator and denominator and also the > ratio are reported as omitted. > Do you know what may cause such problem and is there anyway that I fix it? > > Thanks, > Sherry * * 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/