PSPP-BUG: Different results in PSPP and SPSS

[Maricel Knechtel]

Hi,

I ’am considering to switch over to PSPP, but my first test did not go well.

When running a logistic analysis with the same data I got different results in SPSS and PSPP. I know the SPSS results are right because I got the same results in R)

 

Looking at the results I found following.

The negative B, became a positive B in PSPP.

E.g. Right result in SPSS  for B =  - . 84 , in PSPP =.84

This led to exp(b) being completely wrong in pspp

 

Looking further into the output viewer, I found that what is coded as 1 in my file, was recoded to 0 (for the independent variables) and viceversa.

 

The frequencies and -2 likehood and Nagelkerke R square are otherwise right.

 

Is there anything I am doing wrong?

 

 

Kindly
Maricel