regression with interaction of group variable

Posted by Marnie LaNoue on Sep 08, 2006; 6:51pm
URL: http://spssx-discussion.165.s1.nabble.com/regression-with-interaction-of-group-variable-tp1070835.html

Hi All -

Any comments/advice appreciated!

I have a situation with 2 groups, and 3 continuous predictor variables. THe
research question is mostly regarding whether the predictors differ across
the groups. I created product vectors of (group x predictor) for all
crossings of group and predictors. Does it make sense to run a regression
with just the product vectors as predictors (ignoring the vectors of
predictor variables?)

Another note: I am using path analysis on this data as well, modeling the
relationships for the groups separately to adress certain predictions
regarding the relationships between predictors and outcomes in the groups,
but I want the regression as an omnibus test of differences in the
predictors. Am I correctly interpreting significant coefficients in the
regression of the product vectors as answering this question?