Contrast statement for three way ANOVA

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Contrast statement for three way ANOVA

I am performing a three-way ANOVA and I got a significant three-way interaction between the factors. In the process of further analysis, I need to write a contrast statement to compare the differences between levels of a variable (di - 6 levels) at different levels of another variable (dr - 3 levels). But I am not sure how to write the contrast coefficients for this condition. I have attached my data and SAS code. Please give me some input. 

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Re: Contrast statement for three way ANOVA

Posted in reply to Narendran

Comparing levels to one another is not the place where CONTRAST statements are needed.

 

Use the LSMEANS statement to compare the levels.

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Paige Miller
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Posts: 2

Re: Contrast statement for three way ANOVA

Posted in reply to PaigeMiller

Thank you for your reply. 

 

If I want to test some customized hypothesis regarding some specific levels of a factor, wouldn't I need to use contrast statement?

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