I have three variables and want to get results with different interactions. But I cannot get each effect with the letter group. The below showed was used PROC mix model with repeat measurement. But now I don't have repeat measures. I can only use liner model.   Effect=Biosolid   Method=LSD(P<.05)   Set=1   Obs Biosolid IS TIME Estimate Standard Error Letter Group 1 UREA   _ 10778 539.68 A 2 ATB+U   _ 7327.77 539.68 B 3 ATB   _ 7104.96 539.68 B 4 CONTROL   _ 4201.30 539.68 C ... View more