Thx for your reply ballardw. I have 72 observations and 4 variables. Two groups (control vs. experimental), repeated measures (6 moments) and 12 animals (6/group). I ran a PROC GLM with a split-plot design PROC MEANS N MIN MAX MEAN STD VAR;
VAR IRON;
BY GROUP TIME;
RUN;
PROC GLM data=SHEEP.IRON;
CLASS ANIMAL GROUP TIME;
MODEL IRON=GROUP ANIMAL(GROUP) TIME GROUP*TIME/SS3;
TEST H=GROUP E=ANIMAL(GROUP);
MEANS GROUP TIME/tukey lines;
MEANS GROUP/TUKEY lines E=ANIMAL(GROUP);
lsmeans GROUP*TIME/slice=GROUP pdiff adjust=tukey;
lsmeans GROUP*TIME/slice=TIME pdiff adjust=tukey;
MEANS TIME/TUKEY;
output out=DE STUDENT=IRONE;
RUN;
PROC UNIVARIATE DATA=DE PLOT NORMAL;
VAR IRONE;
TITLE 'SERUM IRON CONCENTRATION';
RUN;
TITLE 'INTERACTION EFFECTS';
PROC SORT;
BY GROUP; RUN;
PROC GLM;
CLASS TIME ANIMAL;
MODEL IRON=TIME/SS3;
MEANS TIME/TUKEY;
BY GROUP;
RUN;
PROC SORT;
BY TIME; RUN;
PROC GLM;
CLASS GROUP ANIMAL;
MODEL IRON=GROUP/SS3;
MEANS GROUP/TUKEY;
BY TIME;
RUN; In older versions of SAS University Edition, tukey lines presented results of means followed by the same LETTER are not significantly different. In the last versions os SAS UE, tukey lines presents results of means follwed by the same BAR (colored lines) are not significantly different. For few variables and repeated measures, no problem. It's pretty fast to figure that out and use LETTERS to indicate significance in tables for scientific papers. However, when there is interaction effect between groups (more than 2) and repeated measures (time=9 moments or more) it is boring and time consuming to do this. Is there a command line that I could use to change the results presentations back to SAS showing LETTERS to indicate significance between means? Thx Here is the log you asked me for. data WORK.IRON;
infile datalines dsd truncover;
input Group:$8. Animal:32. Time:$8. Iron:32.;
datalines;
C 1 M0 28.73
C 2 M0 10.29
C 3 M0 23.91
C 4 M0 22.4
C 5 M0 21.65
C 6 M0 16.44
C 1 M1 19.71
C 2 M1 7.2
C 3 M1 22.85
C 4 M1 23.55
C 5 M1 21.79
C 6 M1 12.9
C 1 M2 22.27
C 2 M2 14.94
C 3 M2 25.32
C 4 M2 17.54
C 5 M2 20.02
C 6 M2 12.5
C 1 M3 22.01
C 2 M3 19.22
C 3 M3 20.42
C 4 M3 23.16
C 5 M3 24.97
C 6 M3 16.13
C 1 M4 25.15
C 2 M4 21.61
C 3 M4 18.91
C 4 M4 19.44
C 5 M4 18.43
C 6 M4 19.66
C 1 M5 26.38
C 2 M5 25.06
C 3 M5 28.5
C 4 M5 20.11
C 5 M5 21.12
C 6 M5 14.89
E 1 M0 25.01
E 2 M0 24.66
E 3 M0 33.45
E 4 M0 31.91
E 5 M0 24.26
E 6 M0 23.51
E 1 M1 19.49
E 2 M1 18.47
E 3 M1 28.15
E 4 M1 22.67
E 5 M1 20.59
E 6 M1 9.67
E 1 M2 15.42
E 2 M2 9.41
E 3 M2 17.94
E 4 M2 7.86
E 5 M2 12.72
E 6 M2 8.66
E 1 M3 18.47
E 2 M3 13.61
E 3 M3 23.38
E 4 M3 8.84
E 5 M3 8.79
E 6 M3 9.67
E 1 M4 25.37
E 2 M4 25.76
E 3 M4 32.53
E 4 M4 18.43
E 5 M4 15.69
E 6 M4 26.43
E 1 M5 25.01
E 2 M5 23.91
E 3 M5 31.42
E 4 M5 24.22
E 5 M5 27.53
E 6 M5 17.72
;;;;
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