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Re: st: clad error: sample size smaller than number of degrees of freedom


From   "Scott Merryman" <scott.merryman@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: clad error: sample size smaller than number of degrees of freedom
Date   Wed, 29 Aug 2007 08:38:23 -0500

I believe it indicates that all of the predict y_hats are less than
the lower limit (assuming left censoring).  You will need to increase
the quantile.

Scott


On 8/29/07, Vivian Hoffmann <veh4@cornell.edu> wrote:
> Dear Statalisters -
>
> I'm trying to estimate a model using the <clad> command, but I get the
> following error:
>
> Program did not converge,
> trimmed sample size is smaller than number of degrees of freedom.
>
> even though I have 188 observations (98 non-censored) and only one
> independent variable...
>
> Any ideas on why this might be happening or how to solve it?
>
> Thanks very much!
>
> Vivian Hoffmann
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