Many thanks

- Thread starter HELP ME PLEASE
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Many thanks

Thank you!

This particular interaction tells you whether the differences between risk groups

changes over time. Or, to put it the other way around: it tells you whether the

pre-post change is different between groups high, medium, low.

If you have a risk score instead of an 3-level risk categorization, it could

perhaps be useful to use the score instead of high/medium/low, because

categorization destroys information.

With kind regards

Karabiner

Or, you peform a "mixed" anova where you use the continuous score

as "covariate" instead of the categorized score as factor. In some

software packages, the covaritae*repeated-measures-factor interaction

is not be provided automatically and must be requested.

With kind regards

Karabiner