## Logistic Regression using CATMOD

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Occasional Contributor
Posts: 8

# Logistic Regression using CATMOD

Dear all,

I would like to know if I could estimate Odds ratio with a Catmod procedure?

Thank you,

Darina Proshenska

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Solution
‎05-01-2018 11:17 AM
SAS Super FREQ
Posts: 4,247

## Re: Logistic Regression using CATMOD

Yes. Use the LOGLIN statement  to specify the model effects and put the _RESPONSE_ keyword on the right-hand side of the MODEL statement. The parameter estimates table contains the estimates on a log scale. You will need to combine them and exponentiate them to get the odds ratios. I wasn't able to find an online example, but there is an example in the "Loglinear Models" chapter of Stokes, Davis, and Koch, "Categorical Data Analysis" book.

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Super User
Posts: 10,787

## Re: Logistic Regression using CATMOD

I am not sure .

CONTRAST '1 vs. 4' A 2 1 1  /  EXP ;

Occasional Contributor
Posts: 8

## Re: Logistic Regression using CATMOD

I will try this. Thank you for your help!

Darina

Solution
‎05-01-2018 11:17 AM
SAS Super FREQ
Posts: 4,247

## Re: Logistic Regression using CATMOD

Yes. Use the LOGLIN statement  to specify the model effects and put the _RESPONSE_ keyword on the right-hand side of the MODEL statement. The parameter estimates table contains the estimates on a log scale. You will need to combine them and exponentiate them to get the odds ratios. I wasn't able to find an online example, but there is an example in the "Loglinear Models" chapter of Stokes, Davis, and Koch, "Categorical Data Analysis" book.

Occasional Contributor
Posts: 8

## Re: Logistic Regression using CATMOD

Okay. I'll check this.

Thanks, Rick,
Darina Proshenska

SAS Super FREQ
Posts: 4,247

## Re: Logistic Regression using CATMOD

@StatDave_sas gave you some valuable advice about using PROC LOGISTIC instead of PROC CATMOD. Please consider following his advice.

Occasional Contributor
Posts: 8

## Re: Logistic Regression using CATMOD

Yes. Thank you!
☑ This topic is solved.

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