Statalist The Stata Listserver


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: RE: power calculation in a case control design


From   "Visintainer, Paul" <[email protected]>
To   <[email protected]>
Subject   st: RE: power calculation in a case control design
Date   Tue, 30 Jan 2007 11:06:45 -0500

What's the (assumed) prevalence of exposure in your control group?

______________________________________
Paul F. Visintainer, PhD
Professor and Chair
Department of Epidemiology and Biostatistics
School of Public Health
New York Medical College
PH: (914) 594-4804
FX: (914) 594-4853

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of stata_user
stata_user
Sent: Friday, January 26, 2007 4:58 PM
To: [email protected]
Subject: st: power calculation in a case control design

Dear All,



I have a case control design with 83 cases and 139 controls.

  I am intersted  in the power of two sided 5% (or 1 sided) test to
detect 
an approximate relative risk of less than 4.

Is there any possibility to have a solution using  stata?

Thanks a lot
Sami

_________________________________________________________________
Get Hotmail, News, Sport and Entertainment from MSN on your mobile.  
http://www.msn.txt4content.com/

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index