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Thread: Grou x Time interactions

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    Grou x Time interactions




    Hi,
    I conducted in my clinical trial a mixed anova with repeated measures. What can I conclude if I find significant interactions Group x Time and main effect for time, but not significant effect of groups.
    Thanks a lot again!
    Paula

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    Re: Grou x Time interactions

    One easy way to get your head around what's going on is to actually graph out the group means. It might be that one group is lower at the beginning but ends up higher than the other (for whatever variable that you're talking about). So it wouldn't make sense to say that one group is always better than the other (thus no main effect of group). By graphing you could see this a little bit easier.

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    Re: Grou x Time interactions


    You are right, one group is lower at the beginning but ends up higher than the other. Then can I conclude that the treatment is effective?
    Thanks!!

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