Displaying 2 results from an estimated 2 matches for "twoby2".
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toby
2006 Nov 10
3
Confidence interval for relative risk
...ates:
odds ratio
Inf
=== end example ===
but in epidemiology authors often
prefer to present risk ratios.
Using the facility on CRAN to search
the site I find packages epitools and Epi
which both offer confidence intervals
for the risk ratio
=== Epi example ===
> library(Epi)
> twoby2(outcome[c(2,1),c(2,1)])
2 by 2 table analysis:
------------------------------------------------------
Outcome : Col 1
Comparing : Row 1 vs. Row 2
Col 1 Col 2 P(Col 1) 95% conf. interval
Row 1 8 500 0.0157 0.0079 0.0312
Row 2 0 500 0.0000 0.0000 NaN...
2006 Apr 03
1
Translate twobin in S-plus to R?
Hi all,
I'm new to R, but have got the task to translate a short program written
for S-plus. I am now stuck on a command twobin which does not seem to be
available in R. Anyone know a replacement for this? The syntax used for
this command in my code is:
zobs<-twobin(obstab[1,1],obstab[1,2],obstab[2,1],obstab[2,2],0.05)
where obstab is a two by two contingency table and the command