R help - Sep 2010 - Simulation

I have two questions:
(1) How do you 'create' an 2 x 2 table in R using  say an Odd ratio of 3
or
even 0.5

(2) If I have several 2 x 2 tables, how can I 'implement' dependence in
the
tables with say 25 of the Tables having an odds ratio of 1 and 75 of the
tables having an odds ratio of 4?

Jim

	[[alternative HTML version deleted]]

Do you need a table with an odds ratio exactly equal to 3 (or other value), or a
realistic sample from a population with odds ratio 3 where the sample table will
have a different OR (but the various tables will cluster around the true value)?

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Jim Silverton
> Sent: Friday, September 10, 2010 1:03 AM
> To: r-help at r-project.org
> Subject: Re: [R] Simulation
> 
> I have two questions:
> (1) How do you 'create' an 2 x 2 table in R using  say an Odd ratio
of
> 3 or
> even 0.5
> 
> (2) If I have several 2 x 2 tables, how can I 'implement'
dependence in
> the
> tables with say 25 of the Tables having an odds ratio of 1 and 75 of
> the
> tables having an odds ratio of 4?
> 
> Jim
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.