Logistic Regression

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madamegeisha
Posts: 1
Joined: Fri Jan 20, 2012 11:29 am

Logistic Regression

Postby madamegeisha » Fri Jan 20, 2012 11:38 am

Hello

I wondered if you could help me.

I have run a multinomial logistic regression with a DV with three levels (young, middle aged, old) and three IV's (three questionnaire items). I have found two significant main effects, a significant two-way interaction and a significant three-way interaction for young relative to old. I only found one significant main effect and a significant three-way interaction for middle age relative to old. However, the graphs that I have produced show that it is middle age that has a completely different trend of results from both young and old, who have very similar results.

I am really confused as to what these significant interactions mean? Are they significant relative to only old or do they reflect all three categories, meaning that young relative to old has a significant two-way interaction because they both differ from middle age?

Can anyone shed any light?

Many thanks
M

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