Leonard, not sure I understand. Kindly send a sample
of ur data (variables of interest, and an illustration
of what you would like new variable to look like
Ronnie
--- Leonard Egede <[email protected]> wrote:
> I would appreciate your assistance with this
> question.
>
> I am trying to create a categorical variable with 8
> levels each representing the presence of one of six
> discrete disease conditions. However, it is possible
> for subjects to have more than 1 disease condition.
> How do I create such a multi-level variable so that
> each level contains only subjects with 1 of the
> disease conditions and those with multiple disease
> conditions fall into a level and those with none of
> the diseases of interest fall into another level?
>
> I tried the generate and replace commands as shown
> below but i am uncertain of how stata handles
> arguments in the replace command
>
> ***What i have done so far***
> I created a multi-level variable using generate and
> replace capture discrete medical conditions with 7
> categories as follows
> generate disease
> replace disease=2 if medical condition ==A
> replace disease=3 if medical condition ==B
> replace disease=4 if medical condition ==C
> replace disease=5 if medical condition ==D
> replace disease=6 if medical condition ==E
> replace disease=7 if medical condition ==F
>
> The questions are - is this the right method? if so
> how do i code subjects with more than 1 of the
> conditions above i.e any combinations of A thru F.
> Also, how does this approach handle
> people with 2 or more of the specified conditions.
>
> I intend to use the 8 level variable in a logistic
> model with level 1 (those without diseases of
> interest) as the reference.
> Thanks
>
>
>
> Leonard E. Egede MD, MS.
> Assistant Professor of Medicine
> Medical University of South Carolina/Center for
> Health Care Research
> 135 Cannon Street, Suite 403
> PO BOX 250837
> Charleston, SC 29425
>
> Director, Charleston TREP
> Understanding Health Disparities in Chronic Diseases
> Ralph H. Johnson VA Medical Center
> Rm F229
> 109 Bee Street
> Charleston, SC 29401
>
>
> Email: [email protected]
> Tel: 843-792-2969
> Tel: 843-789-6670 (Alternate)
> Fax: 843-876-1201
>
>
> *
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> *
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> * http://www.ats.ucla.edu/stat/stata/
>
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