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Re: st: How to get Odds Ratios rather than Relative Risk Ratios from -mlogit-


From   sjsamuels@gmail.com
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: How to get Odds Ratios rather than Relative Risk Ratios from -mlogit-
Date   Fri, 18 Sep 2009 11:11:27 -0400

In your 3x3 table,  compute the ORs for the four  2x2 tables  I
outlined (the baseline predictor category  and baseline outcome appear
in each) and compare to the corresponding RRRs.

-Steve

On Fri, Sep 18, 2009 at 10:10 AM, Philip Burgess
<philip.burgess.uq@gmail.com> wrote:
> Thanks Steve. I'm still a bit confused though.
>
> The situation I have is typcially a 3 level outcome category & a 3
> level predictor category.
>
> I looked at the
> http://www.ats.ucla.edu/stat/stata/output/stata_mlogit_output.htm
> notes and they say:
>
> "However, the exponentiated coefficient are commonly interpreted as
> odds ratios".
>
> But "interpretation" per se is perhaps the easy way out ....
>
> Thanks for your thoughts.
>
> Philip
>
>
>
> On Fri, Sep 18, 2009 at 10:53 PM,  <sjsamuels@gmail.com> wrote:
>> RRRs are ORs for the 2 x 2 table consisting of the baseline outcome
>> category, baseline predictor category, and the outcome and predictor
>> categories which index the RRR.  See the mlogit manual 3 x 2 example.
>>
>> -Steve
>> On Fri, Sep 18, 2009 at 12:16 AM, Philip Burgess
>> <philip.burgess.uq@gmail.com> wrote:
>>> I have a complex survey design defined as:
>>>
>>> svyset _n [pweight=mhsfinwt], jkrweight(wpm0101 - wpm0160)
>>> vce(jackknife) singleunit(missing)
>>>
>>> When I run the following command, I get RRRs:
>>>
>>> xi: svy jackknife, nodots : mlogit BAgrp_DX i.isevaus, baseoutcome(1) rrr
>>>
>>> I wanting to report ORs - but using -eform- option doesn't seem to work:
>>>
>>> xi: svy jackknife, nodots : mlogit BAgrp_DX i.isevaus, baseoutcome(1) eform(or)
>>>
>>> Any ideas?
>>>
>>> Thanks;
>>>
>>> Philip Burgess
>>> *
>>> *   For searches and help try:
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>>>
>>
>>
>>
>> --
>> Steven Samuels
>> sjsamuels@gmail.com
>> 18 Cantine's Island
>> Saugerties NY 12477
>> USA
>> 845-246-0774
>>
>> *
>> *   For searches and help try:
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>>
>
> *
> *   For searches and help try:
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> *   http://www.ats.ucla.edu/stat/stata/
>



-- 
Steven Samuels
sjsamuels@gmail.com
18 Cantine's Island
Saugerties NY 12477
USA
845-246-0774

*
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