Thanks for getting back to me!  The experimental design has 4 increased doses of a supplement (0, 5, 10, and 20%) in poultry with 10 animals/pen and 5 pens/treatment. Here the syntax I used: proc GLM; Class Pen TRT Sex; Model par1 par2 par3 par4 =TRT; lsmeans TRT/ pdiff; means SHB / t lines; run;   proc GLM; Model par1 par2 par3 par4 =TRT TRT*TRT; Run;     I am interested in having a table such this:                           Parameter Lsmean TRT SEM P-value Linear Quadratic   0 5 10 20         par1                 par2                 par3                 par4                     Thanks!   ... View more