## Interpreting stepwise regression results

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natura
Posts: 5
Joined: Wed Aug 12, 2015 7:12 pm

### Interpreting stepwise regression results

Hi!
I'm having problems in understanding the results of my analysis. If my model selects an indipendent variable with a negative t coefficient,does it means that there's a negative correlation? For example: my dipendent value is "salary" and the indipendent value selected by SPSS is "BMI", with beta coeff. -0,16, t -2,5 and p-value 0,00... Does it means that less money are predictors for higher BMI?
I hope my question is enough clear
natura
Posts: 5
Joined: Wed Aug 12, 2015 7:12 pm

### Re: Interpreting stepwise regression results

This is an exemple!Please can you help me to understand how to explain this tab?
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GerineL
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Joined: Tue Jun 10, 2008 4:50 pm

### Re: Interpreting stepwise regression results

You can look at the beta coefficient: negative means a negative relation, so indeed, higher values on the predictor predict lower values on the outcome.
natura
Posts: 5
Joined: Wed Aug 12, 2015 7:12 pm

### Re: Interpreting stepwise regression results

GerineL
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Posts: 1477
Joined: Tue Jun 10, 2008 4:50 pm

### Re: Interpreting stepwise regression results

beta is always standardized, therefore it is under the heading " standardized coefficients" . However looking at your table again, it is very surprising: you ahve no b and no se b, but a sig beta?
I don't get it, are you sure there are no problems with your variable?

please post the entire table (not just this part of it) including notes below the table, just in case...
natura
Posts: 5
Joined: Wed Aug 12, 2015 7:12 pm

### Re: Interpreting stepwise regression results

OMG sorry! I messed up while copying&pasting so values changed. Sorry.
This is the complete table
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GerineL
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Posts: 1477
Joined: Tue Jun 10, 2008 4:50 pm

### Re: Interpreting stepwise regression results

aah good, this looks like it makes sense

so as you see, the - sign is equal between b, beta and t.

if you look for "interpreting spss output regression" or something comparable, you can find great tutorials online explaining how to interpret b vs beta etc.
natura
Posts: 5
Joined: Wed Aug 12, 2015 7:12 pm

### Re: Interpreting stepwise regression results

Ok! Thank you very much!!!

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