Re: st: graph the fitted values in a 3-way interaction with additional covariates

[Richard Williams <richardwilliams.ndu@gmail.com>]

How about something like this?

webuse nhanes2f, clear
reg health c.age##female##black height weight
margins female#black, at(age=(20(5)70))
marginsplot

You could use the -atmeans- option or otherwise specify values for 
the other covariates.


At 07:26 AM 5/24/2013, Gentile, Elisabetta wrote:
> Dear StataListers,
>
> I have a dataset of firms grouped by country and sector of operation.
> I run a linear probability model with a three-way interaction, where
> my dependent variable Y is obviously a binary indicator, my
> independent variable X is continuos on [0,1], the modifier W is a
> binary indicator, and Z is a categorical variable that splits the data
> into three groups.
>
> I want to graph the slopes for each of the interactions, so that if I
> have the simple regression:
>
> regress Y c.X##W##Z
>
> then for example I can do:
>
> twoway lfit Y X, by(W Z)
>
> which generates six charts with the slopes for each group.
>
> The problem is that my model has additional covariates, such as sector
> and year fixed effects, and other continuous variables both at the
> country and firm level.
>
> How do I graph the slopes for each of the interactions for the model
> including all the covariates?  The first thing that came to mind was
> avplot, but it does not accept the by() option, so I am at a loss
> here.  There must be a simple solution that I am not seeing!  Your
> input is much appreciated.
>
> Regards,
> Elisa
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/faqs/resources/statalist-faq/
> *   http://www.ats.ucla.edu/stat/stata/

-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
HOME:   (574)289-5227
EMAIL:  Richard.A.Williams.5@ND.Edu
WWW:    http://www.nd.edu/~rwilliam

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/