data drying; infile 'drying.dat' firstobs = 2; input obs cow period sample drying dmrem cprem; proc mixed data = drying; class cow period sample drying; model dmrem = cow | period | drying; random sample(period) drying*sample(period); lsmeans period*drying; proc mixed data = drying; class cow period sample drying; model dmrem = cprem cow | period | drying; random sample(period) drying*sample(period); lsmeans period*drying; The Mixed Procedure Dependent Variable dmrem Class Level Information Class Levels Values cow 3 2524 2530 2541 period 3 1 2 3 sample 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 drying 3 1 2 3 Covariance Parameters 3 Columns in X 64 Columns in Z 120 Subjects 1 Max Obs Per Subject 270 Observations Used 259 Observations Not Used 11 Total Observations 270 Covariance Parameter Estimates Cov Parm Estimate sample(period) 0.001666 sampl*drying(period) 0.000096 Residual 0.000966 Fitting Information Res Log Likelihood 401.4 Akaike's Information Criterion 398.4 Schwarz's Bayesian Criterion 396.3 -2 Res Log Likelihood -802.9 Type 3 Tests of Fixed Effects Num Den Effect DF DF F Value Pr > F cow 2 151 11.49 <.0001 period 2 27 0.67 0.5219 cow*period 4 151 1.12 0.3504 drying 2 54 1.95 0.1522 cow*drying 4 151 1.06 0.3776 period*drying 4 54 5.02 0.0016 cow*period*drying 8 151 2.43 0.0167 Least Squares Means Standard Effect period drying Estimate Error DF t Value Pr > |t| period*drying 1 1 0.2893 0.01381 54 20.95 <.0001 period*drying 1 2 0.2884 0.01385 54 20.82 <.0001 period*drying 1 3 0.2846 0.01386 54 20.53 <.0001 period*drying 2 1 0.2931 0.01453 54 20.17 <.0001 period*drying 2 2 0.2546 0.01449 54 17.57 <.0001 period*drying 2 3 0.2573 0.01449 54 17.76 <.0001 period*drying 3 1 0.2788 0.01522 54 18.32 <.0001 period*drying 3 2 0.2883 0.01533 54 18.81 <.0001 period*drying 3 3 0.2947 0.01522 54 19.37 <.0001 The Mixed Procedure Dependent Variable dmrem Class Level Information Class Levels Values cow 3 2524 2530 2541 period 3 1 2 3 sample 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 drying 3 1 2 3 Covariance Parameters 3 Columns in X 65 Columns in Z 120 Subjects 1 Max Obs Per Subject 270 Observations Used 258 Observations Not Used 12 Total Observations 270 Covariance Parameter Estimates Cov Parm Estimate sample(period) 0.000184 sampl*drying(period) 0.000045 Residual 0.000122 Fitting Information Res Log Likelihood 624.9 Akaike's Information Criterion 621.9 Schwarz's Bayesian Criterion 619.8 -2 Res Log Likelihood -1249.7 Type 3 Tests of Fixed Effects Num Den Effect DF DF F Value Pr > F cprem 1 149 1461.81 <.0001 cow 2 149 7.67 0.0007 period 2 27 5.78 0.0081 cow*period 4 149 2.91 0.0236 drying 2 54 21.14 <.0001 cow*drying 4 149 0.73 0.5713 period*drying 4 54 3.86 0.0078 cow*period*drying 8 149 2.86 0.0055 Least Squares Means Standard Effect period drying Estimate Error DF t Value Pr > |t| period*drying 1 1 0.2717 0.004993 54 54.41 <.0001 period*drying 1 2 0.2861 0.004987 54 57.36 <.0001 period*drying 1 3 0.2977 0.005002 54 59.52 <.0001 period*drying 2 1 0.2671 0.005278 54 50.60 <.0001 period*drying 2 2 0.2649 0.005223 54 50.71 <.0001 period*drying 2 3 0.2731 0.005233 54 52.19 <.0001 period*drying 3 1 0.2797 0.005479 54 51.04 <.0001 period*drying 3 2 0.2930 0.005570 54 52.61 <.0001 period*drying 3 3 0.2965 0.005479 54 54.11 <.0001