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Re: st: ZIP plotting interactions
From
"Dimitriy V. Masterov" <[email protected]>
To
Statalist <[email protected]>
Subject
Re: st: ZIP plotting interactions
Date
Tue, 11 Mar 2014 09:36:00 -0700
Elizabeth,
1) There's a nice example of continuous-factor interaction with
margins in this post:
http://www.stata.com/statalist/archive/2013-01/msg00293.html
It's not a ZIP, but the same logic applies.
2) It would be much easier to help if you show your code and error
messages exactly.
DVM
On Tue, Mar 11, 2014 at 3:23 AM, Elizabeth Aguirre Lopez
<[email protected]> wrote:
> I have acquired count data with an excess amount of zeros. Therefore, I
> have employed the zero-inflated poisson model.
>
> My main interest is to visualize the interaction between a categorical
> value (0/1) and a continuous variable. My model also contains a few
> covariates.
>
> I have tried to apply the prvalue command, however I always run into a
> conformability error r(503). I have checked my data, and I have no missing
> values.
>
> I have also tried to use the margins command, but it doesn't seem to
> work because my continuous variable is a not an integer.
>
> Does anyone have any other suggestions on what I can do?
>
> Thank you,
>
> Elizabeth
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