Stata [sic] is innocent here. It is doing what -prvalue-
tells it to. -prvalue- is, as you know but others may
not, a program from the -spost- package from Scott Long and Jeremy
Freese. I am not sure if either is a member of Statalist,
so if you get no good answers to this, the next step may be
to contact the program authors directly.
Can -adjust- help with what you want?
Nick
[email protected]
Robert Bozick
> I want STATA to estimate predicted probabilities for my
> binary outcome for
> different levels of my independent variables. I am
> estimating a logit
> model. STATA estimates the model without any error messages.
> I then use
> the prvalue commands to obtain the predicted probabilities.
> To be specific,
> the code I use is:
>
> prvalue, x(hourw10=1 hourw20=0 hourw30=0 hourw40=0 hourw40p=0
> offcampus=1
> apt=0 fam=0 misres=0 off20=0 off30=0 off40=0 apt10=0 apt20=0
> apt30=0 apt40=0
> apt40p=0 fam10=0 fam20=0 fam30=0 fam40=0 fam40p=0 misr30=0 misr40=0
> misr40p=0)
>
> Again, I receive no error messages, but STATA does not
> produce the predicted
> probabilities (or they are invisible). The output looks like this:
>
> logit: Predictions for persist
>
> Pr(y=continuo|x): . 95% ci: ( ., .)
> Pr(y=no_persi|x): . 95% ci: ( ., .)
>
> The predictions are not there! Help! Does anyone know what
> I am doing
> wrong? Why can I not get STATA to produce the predicted values?
>
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