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    Statistically Significant Covariant in MANCOVA- Next steps?

    Why do you care about the statistical significance of covariates? Ususally ,covariates are included to adjust for confounders or to reduce error variance, but they are not of substantial interest (in which case they would be introduced and discussed as predictors, in my opinion).
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    Testing different effects of an intervention on different outcomes

    Well...thank you... I really appreciate that you spend your efforts on my questions... but since seemingly you either do not read carefully, or you do not clearly understand what is written, and since in in addition you do not formulate clear answers, I am afraid that trying again would be a...
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    Testing different effects of an intervention on different outcomes

    Thank you very much once more. As far as I know, in difference in differences analyses, the change of Y1 in condition A over time is compared with the change of the same variable Y1 in condition B over time. I am not sure how to adapt that approach to 2 different dependent variables. Would you...
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    Testing different effects of an intervention on different outcomes

    Thank you very much for your reply! As mentione above, we want to include k=2 variables at a time, and we want to test whether the impact (group effect) is larger on one of them than on the other. As far as I know, MANOVA means to construct a composite out of the 2 variables - how do we then...
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    Testing different effects of an intervention on different outcomes

    Dear forum members, we are planning to conduct a study with 2 groups (experimental vs. control) and random allocation to groups, and group sizes about 40-50 subjects each. Outome measures will be interval scaled. Among them will be frequency of verbal communication with a partner (VCP), over a...