Thank for the ref Mike. I hadn't seen that before.
So, for the odds ratio of 1.42,
ln (1.42)
z = ---------------------------------------------- = 1.06, NS
SQRT(1/25 + 1/88 + 1/19 + 1/95)
Chris
==========
Mike Palij wrote:
> On Thu, 27 Nov 2008 22:05:02 -0500, Christopher D. Green wrote:
>
>> [snip]
>> There is no significance test I know of
>> associated with odds ratios (but apparently there isn't one associated
>> with Cox either).
>>
>
> I don't have the time right now to get involved in this thread but
> I did want to address the comment Chris made above. Of course
> there are significance tests and confidence itntervalas for odds ratios,
> logistic regression would be pointless if this weren't so. For more
> info on how to calculate the statistical significance of a single odds
> ratio (null hypothesis is that the odds ratio = 1.00 or there is no
> relationship) see the following on books.google.com:
> http://books.google.com/books?id=bmwhcJqq01cC&pg=PA542&dq=%22significance+test%22+%22odds+ratio%22&lr=&num=100#PPA542,M1
>
> or
> http://tinyurl.com/5zx4dv
>
> -Mike Palij
> New York University
> [EMAIL PROTECTED]
>
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