[Limdep Nlogit List] Panel ZIP model

[Wells, Aaron]

All,

Version 8 of Limdep states that the panel ZIP/Logit model is supported,
but upon estimation of the following three sets of code, I receive
identical results.  Has anyone else noticed this, and if so, is there a
coding solution (hopefully, I am just overlooking some salient line of
coding).

? ZERO INFLATION PROBABILITY DEPENDENT UPON RH2 VARS
POISSON; lhs = y;  
        rhs = x;
        rh2 = one, age, female;
        pds = 3;
        zip$

? CONSTANT ZERO INFLATION PROBABILITY  
POISSON; lhs = y;  
        rhs = x;
        pds = 3;
        zip$

? POISSON MODEL FOR PANEL DATA - NO ZIP SPEC
POISSON; lhs = y;  
        rhs = x;
        random;
        pds = 3$

Regards,

Aaron

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