Thursday, December 29, 2005
st: suest for intreg
Is it possible to use suest for intreg when some of the intervals are not bounded (i.e. < -∞ , a] or [b, ∞ > )?
I am trying to test differences in coefficients across two intreg models. In both models I have censored data, i.e. only a maximum or minimum value is specified.
When using suest I get the following error message: “Score variables for model X contain missing values”
Even though suest seems possible when using intreg, see example: http://www.stata.com/help.cgi?suest
suest requires the predict, score option to give non-missing values, so I guess that’s where it goes wrong.
Any solutions to work around it, or suggestions how to test differences in coefficients differently?
Many thanks, Bart Vanneste
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