st: To: statalist <statalist@hsphsun2.harvard.edu>

[Lin Yang <linyang33@gmail.com>]

Hi All

A question regarding how to retrieve the adjusted prevalence from
logistic models.
I supposed I could use "margins", and set my covariates at certain
values, but I am not sure what to do with continuous variables for
adjustment.

For example, I run my model
xi: logit outcome i.cov1 i.cov2 age
where cov1 =3D (1, 2), cov2 =3D (1, 2, 3), and age is a continuous variable.=

then I try to retrieve the prevalence of outcome when cov1=1 or 2,
cov2=1 or 2 or 3,and adjusting for age
Should I do
margins, at (_Icov1_2=0 _Icov2_2=0 _Icov2_3=0)
or
margins, at (_Icov1_2=0 _Icov2_2=0 _Icov2_3=0) atmeans

I am not sure whether having 'atmeans' or not would give me a age
adjusted prevalence.
Would very much appreciate your help!

Thanks!

Best,
Lin Yang
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