Binary logistic with binary predictors

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tomgo
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Joined: Wed Nov 05, 2014 10:29 am

Binary logistic with binary predictors

Postby tomgo » Wed Nov 05, 2014 10:34 am

Hello,
I'm trying to analyze a dataset of all binary variables.
I want to test a 2-way interaction of binary variables (yes/no) on a binary DV.
I've used chi-square test with crosstabs and it worked fine- the interaction was highly significant. However, when using logistic regression (entering both main effects and the iinteraction) the interaction is highly insignificant.
How is this possible? What am I doing wrong?

Thank you

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