Adding asterisks based on P-values.  
When you do statistical procedures in SAS and use ODS you can
save results in SAS data sets.  Such data contains P-values,
so you can create a new variable that indicates statistical
significance using *.

These below have to happen in data steps.


Example 1
length sig $ 4;

if probz < .1 then sig="*"; 
if probz < .05 then sig="**"; 
if probz < .01 then sig="***"; 
if probz < .001 then sig="****"; 
if probz < -999 then &var1.sig="";


Example 2 (when using macro)

length &var1.sig $ 4;
if probz < .1 then &var1.sig="*"; 
if probz < .05 then &var1.sig="**"; 
if probz < .01 then &var1.sig="***"; 
if probz < .001 then &var1.sig="****";
if probz < -999 then &var1.sig="";


You can put this underneath a table that you create.
Note. * p < .10, ** p < .05, *** p < .01, **** p < .001  


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HERE IS A SAMPLE SYNTAX.  See how I used ODS statement in PROC MIXED to save
results in SAS data sets.
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proc mixed data=std2 covtest noclprint ;
class DSCHCD schooltype ;
model &outcome =GRADE sfemale noneng momcollg minority grade /solution ddfm=bw ;
random intercept &var1 /sub=DSCHCD s;
ods output solutionF=XX&var1 CovParms=XXC&var1;
run;

data B&var1;
retain stat &var1.estimate  &var1.sig;
set XX&var1;
if effect="&var1";
length &var1.sig $ 4;
&var1.estimate=estimate;

if probt < .1 then &var1.sig="*"; 
if probt < .05 then &var1.sig="**"; 
if probt < .01 then &var1.sig="***"; 
if probt < .001 then &var1.sig="****";if probt < -999 then &var1.sig=""; 
stat="Effect   "; 
keep &var1.estimate  &var1.sig stat;
run;

data BC&var1;
retain stat &var1.estimate  &var1.sig;
set XXC&var1;
if covparm="&var1";
length &var1.sig $ 4;

if probz < .1 then &var1.sig="*"; 
if probz < .05 then &var1.sig="**"; 
if probz < .01 then &var1.sig="***"; 
if probz < .001 then &var1.sig="****"; if probz < -999 then &var1.sig=""; 
&var1.estimate=estimate;
stat="Variance"; 
keep &var1.estimate  &var1.sig stat;
run;

data BOTH&var1;
retain outcomes;
set B&var1 BC&var1;
length outcomes $ 30;
Outcomes ="&taitoru";
run;