topic Re: How to interpret odds ratio in logistic regression with multiple levels in independent variable? in Discussions

How to interpret odds ratio in logistic regression with multiple levels in independent variable?

CSS — Wed, 12 Jul 2023 13:17:00 GMT

Hi,

I am new to JMP and was getting confused in the interpretation of the odds ratio table while conducting a logistic regression.

Re: How to interpret odds ratio in logistic regression with multiple levels in independent variable?

Mark_Bailey — Mon, 10 Jul 2023 13:43:37 GMT

Please show the JMP output that includes these odds ratios. I would include the entire window if possible. It includes diagnostic information as well.

Re: How to interpret odds ratio in logistic regression with multiple levels in independent variable?

CSS — Wed, 12 Jul 2023 13:17:23 GMT

Sure, I have attached a screenshot.

Re: How to interpret odds ratio in logistic regression with multiple levels in independent variable?

Mark_Bailey — Mon, 10 Jul 2023 18:24:06 GMT

The Age Range effects are not significant. The odds ratios for the Age Range levels are not different from 1.

Re: How to interpret odds ratio in logistic regression with multiple levels in independent variable?

CSS — Mon, 10 Jul 2023 21:37:08 GMT

Thanks for the reply!
I get that, I additionally wanted to know which level (level 1 or level 2) is the reference level here?

Re: How to interpret odds ratio in logistic regression with multiple levels in independent variable?

Mark_Bailey — Tue, 11 Jul 2023 16:44:18 GMT

It appears as text immediately under the Odds Ratio outline title bar: "For Contol odds of 1 versus 0." The odds are therefore the probability of the response = 1 versus the probably of the response = 0.