Page 1 of 2: odd ratio

DRGSR · Credits: 4545 My Scrapbook

the study has been done between risk factor and a disease. odd ratio was 2.3. what is true

there is sigificant association betwwen risk factor and disease
the disease is 2.3 times more comon in those having risk factor

uncle · Credits: 583 My Scrapbook

there is sigificant association betwwen risk factor and disease

jabby · Credits: 3703 My Scrapbook

there is significant association between risk factor and disease.
it can be interpretted as ratio of odds of developing the outcome(DISEASE)among those exposed to hypothetical risk factor to those who are not exposed.

maryana · Credits: 15476 My Scrapbook

the disease is 2.3 times more comon in those having risk factor - is this about relative risk?, could someone tell me?

Georges · Credits: 14631 My Scrapbook

the disease is 2.3 times more comon in those having risk factor

mdc · Credits: 548 My Scrapbook

there is association between the risk factor and disease.

OR means the likelihood of having a disease when the risk factor is present(comparing with the absence of that specific risk factor).Anything greater than 1 means association, however, greater than 2 is something that any research study will hope to prove.

mdc

Georges · Credits: 14631 My Scrapbook

You are right mdc, any odds ratio more than one tells us that the disease is "MORE LIKELY" to happen with the risk factor without giving the exact ratio.
So the answer should be:
there is sigificant association between risk factor and disease

bariluis · Credits: 302 My Scrapbook

You can't actually tell if OR=2.3 is significant or not. For that you will need to have either a p-value <0.05 or a confidence interval around 2.3 which doesn't include 1 (for example CI: 1.5-4.5). And we do not have this information in this case.
OR=2.3 means that the odds of having the disease is 2.3 times higher in exposed compared to unexposed.

mdc · Credits: 548 My Scrapbook

"significant" there refers at 2.3 - the fact that is much higher than 1. Don't mix up with 'statistical significant' which indeed refers to p value.

bariluis · Credits: 302 My Scrapbook

So, if OR=2.3 and the CI is (0.9-3), will you say there is a significant association? Just because it is >1, it is not a significant OR. No study will ever report an OR with just a number without P-value or CI and refer to it as 'significant'. You can check this in any Epidemiology book.

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