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. findit hurdle model
Nick
[email protected]
Eduardo Nunez
Thank you so much for your help.
Even though I know the DL, no idea about the biomarker distribution.
I may try all options suggested. However, I would like to know if
Stata perform a hurdle model?
Peter A. Lachenbruch
This sounds like an application for a two-part or hurdle model:
You want to compare the frequency of below detection limit in two
populations (or to a standard) and the continuous variable above the
detection limit.
My inclination is NOT to use imputation - you already know these are
below the detection limit, so why impute something larger than that?
I've been wary of Tobit models since I read somewhere (and I don't
remember where, darn it) that they are quite sensitive to the
normality assumption.
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