*
chapter_11_table_5

For the present data set, 12 children were each observed four times 
over an 18 month period. The dependent variable is the age-normed 
general cognitive score on the McCarthy Scales of Children's 
Abilities. Interest is to determine if the children were sampled 
from a population where growth in cognitive ability is more rapid 
or less rapid than average.  
 
To perform the repeated measures analysis, PROC GLM is used. On the 
MODEL statement line the repeated factors are placed on the left 
side of the equals sign. Notice that for the present analysis no 
covariates or group identifiers are included on the right side of 
the equals sign. However, /NOUNI is included, which simply tells SAS 
not to perform separate univariate analyses on each level of the 
factor. The REPEATED line below the model statement 
tells SAS what factor is being repeated (this can be named anything). 
The results of this analysis match those given on page 539. 

Note that by default results for the multivariate repeated measures
analysis as well as the results for univariate repeated measures
analysis are given. At the present time we are only interested 
in the univariate analysis (where sphericity is assumed). 

Note that SAS gives the Greenhouse-Geisser Epsilon (Epsilon hat) 
and the Huynh-Feldt Epsilon (Epsilon tilda) by default, which will
soon be of interest.
;

LIBNAME md 'd:\data files by type\sas data files\tables';
     Data c11t5;
       SET md.chapter_11_table_5;
PROC GLM;
MODEL months30 months36 months42 months48 = / SOLUTION NOUNI;
REPEATED months;
RUN;
;