Re: How to compare these two rates??
- From: Jay Weedon <jweedon@xxxxxxxxxxxxx>
- Date: Mon, 16 Jan 2006 07:54:35 -0500
On Mon, 16 Jan 2006 21:59:36 +1100, pp <peepee@xxxxxxxxx> wrote:
>I need to compare 2 groups. A treatment and a control.
>
>For each groups I have the (i) total No. Medicines and (ii) the
>population.
>So my data looks like:
>
>Treatment: 100 medicines for 1000 people
>Control: 160 mediines for 1200 people
>
>(ie its highly summarised counts)
>
>So i have a rate for each group (medicines per population). What
>simple statistical method can I use to compare the groups. Can i take
>the ratio of the rates and show they are statsitically different from
>1? Like isnt there a Breslow-Day test for rates or similar??
>
>Ie I need to show that the treatment has less mediicnes than the
>control. and show statistical signinfiance / conf interval.
Well, what's the process here? Is it that each of the 1000 either has
1 medicine or none? Or can a person have more than one? See the recent
thread "analysis of correlated/clustered binary data".
JW
.
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