The table did not come out on rich text format.

So what I wrote was,

                     <40%    >40%  Total
No disease      131         75     206
Have diease      27           6      33
                                             239

My odds ratio: 27/(27+131))/(131/(27+131)) = 0.206
I am looking for the confidence interval.

Mike

On Tue, Aug 14, 2012 at 2:59 PM, C W <tmrsg11@gmail.com> wrote:

> Suppose my results comes out like this,
>
>
>
> <40%
>
> >40%
>
> Total
>
> No disease
>
> 131
>
> 75
>
> 206
>
> Have disease
>
> 27
>
> 6
>
> 33
>
>
>
>
>
>
>
> 239
>
> My odds ratio: 27/(27+131))/(131/(27+131)) = 0.206
>
> I want to calculate the confidence interval for it.
> Mike
>
> On Tue, Aug 14, 2012 at 2:52 PM, Nordlund, Dan (DSHS/RDA) <
> NordlDJ@dshs.wa.gov> wrote:
>
>> > -----Original Message-----
>> > From: r-help-bounces@r-project.org [mailto:r-help-bounces@r-
>> > project.org] On Behalf Of C W
>> > Sent: Tuesday, August 14, 2012 11:18 AM
>> > To: r-help
>> > Subject: [R] What package to use to calculate odds ratio and the
>> > confidence interval?
>> >
>> > Hi list,
>> > I am trying to calculate the sensitivity, specificity, and odds
>> > ratio(and
>> > confidence interval).
>> > Say, my data looks like this
>> >
>> > 42.53, 37.56, 40.51, 32.67, 38.19, 81.74, 41.55, 68.94, 59, 63, 54.13,
>> > 48.85, 50.46, 51.78
>> >
>> > Is there any packages in R that does this?  Espeically the odds ratio
>> > confidence interval.
>> >
>> > Mike
>>
>> You need to provide more information than  you have.  The odds of
>> something happening is the probability of it happening divided by
>> (1-probability).  To calculate the odds ratio, you need to have odds for
>> two different groups.  I suspect you need to get some local statistical
>> assistance on these concepts before you will get much help on R packages
>> and functions.
>>
>> Dan
>>
>> Daniel J. Nordlund
>> Washington State Department of Social and Health Services
>> Planning, Performance, and Accountability
>> Research and Data Analysis Division
>> Olympia, WA 98504-5204
>>
>>
>> ______________________________________________
>> R-help@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.
>>
>
>

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