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CSS
CSS
Level I

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

Created: Jul 9, 2023 08:27 AM  |  Last Modified: Jul 12, 2023 6:17 AM (1548 views)

Hi, 

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

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Accepted Solutions
Mark_Bailey
Staff Mark_Bailey
Staff
Solution

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

Jul 11, 2023 12:44 PM (1472 views)  |  Posted in reply to message from CSS 07-10-2023

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.

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5 REPLIES 5
Mark_Bailey
Staff Mark_Bailey
Staff

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

Jul 10, 2023 09:43 AM (1508 views)  |  Posted in reply to message from CSS 07-09-2023

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

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CSS
CSS
Level I

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

Created: Jul 10, 2023 12:59 PM  |  Last Modified: Jul 12, 2023 6:17 AM (1501 views)  |  Posted in reply to message from Mark_Bailey 07-10-2023


Sure, I have attached a screenshot.

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Mark_Bailey
Staff Mark_Bailey
Staff

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

Jul 10, 2023 02:24 PM (1494 views)  |  Posted in reply to message from CSS 07-10-2023

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

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CSS
CSS
Level I

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

Jul 10, 2023 05:37 PM (1484 views)  |  Posted in reply to message from Mark_Bailey 07-10-2023

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

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Mark_Bailey
Staff Mark_Bailey
Staff
Solution

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

Jul 11, 2023 12:44 PM (1473 views)  |  Posted in reply to message from CSS 07-10-2023

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.

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