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st: R: re. computing RR thru proportions


From   "Carlo Lazzaro" <[email protected]>
To   <[email protected]>
Subject   st: R: re. computing RR thru proportions
Date   Fri, 29 Nov 2013 16:16:00 +0100

Dear Panos,
you may want to take a look at -help csi-.

Hovewer, you have to use cases and noncases instead of proportions to make
csi work.

Kind regards,
Carlo
 
-----Messaggio originale-----
Da: [email protected]
[mailto:[email protected]] Per conto di PAPANIKOLAOU P.
Inviato: venerdì 29 novembre 2013 12:34
A: [email protected]
Oggetto: st: re. computing RR thru proportions

Dear all
I have got people with MS per month over one year (i.e., the A) and used UK
Births for each month, as my control group, again over 12 months, so I have
got the C in a typical 2x2 table.  These are two time-series, each of 12
months. 
I need to take the UK population proportion for January against PwMS
proportion for January and so on in order to compute risk ratios. When I do
this and enter the information in STATA, the results look unreasonable.
Using proportions seem to be causing a problem.
Would you please be kind enough to help me how best I would resolve this
issue.
Thanks very much
Panos

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