Thank you very much, Dr. Denham, for providing me a useful example. I referred the link and understood how I need to process my model to compare among groups. But I am still confused the SAS statements for this process. The F statistics and P values for comparing the reduced and the full models gave me a value with <0.0001. Therefore, I would like to test which parameters varies among three treatments. In a case with two treatments, a null hypothesis is simple; however, how I should think and make SAS statements for more than two treatments. I appreciate if you give me some tips or links that I can refer. Best regards,
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