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Re: st: Categorical variable and -nestreg-
From
William Buchanan <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Categorical variable and -nestreg-
Date
Mon, 2 Sep 2013 19:21:05 -0500
Check your syntax again. The issue is probably with the interaction terms that you include using factor variable notation. Create the interactions first as new variables and try using those instead.
HTH,
Billy
Sent from my iPhone
On Sep 2, 2013, at 19:09, David de Jong <[email protected]> wrote:
> Hello all,
>
> New Stata user here. I'm trying to use -nestreg- to run a hierarchical
> (not stepwise) regression. I'm having some trouble, and I was hoping
> someone could lend a hand. This is the syntax:
>
> nestreg: regress z_target_RT_c12 (condition) ///
> (z_neutral_RT_c12 z_nonword_RT_c12 z_int_goals_c12 z_enhance_goals_c12) ///
> (c.z_int_goals_c12#condition c.z_enhance_goals_c12#condition)
>
> Condition is categorical, with 2 possible values. All other variables
> are continuous.
>
> When I run the syntax, I receive the error:
> factor variables not allowed
> r(101);
>
> I've figured out nestreg can't handle factor variables, as indicated
> by this error message. I've tried using "xi:" before "nestreg" and
> appending "i." to "condition" but I still get the "factor variables
> not allowed" error message. Is it simply the case that I cannot use
> -nestreg- for categorical variables? If so, are there other ways to
> deal with this?
>
> Thanks so much,
>
> David de Jong
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