st: results of interaction term

[Jian Liu <jian.liu@brocku.ca>]

Dear list members,

I've a question regarding interpretation of the results of interaction term 
from multiple regression model.
before introducing interaction term, the results from MR were:
 x1 (continuous)  significant
 x2 (binomial)      significant
after introducing the interaction term x1x2, the results from MR were:
x1 significant with no change of coefficient
x2    not significant with a change of coefficient
x1x2 not significant

So how do we interpret the results as such? thanks for your help.

Jason

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