SAS/STAT 922 User's Guide: The MIXED Procedure (Book Excerpt)

4544 ✦ Chapter 56: The MIXED Procedure
DIVISOR=number
specifies a value by which to divide all coefficients so that fractional coefficients can be entered
as integer numerators.
E
GROUP coeffs
requests that the L matrix coefficients be displayed. For ODS purposes, the name of this “L
Matrix Coefficients” table is “Coef.”
GRP coeffs
sets up random-effect contrasts between different groups when a GROUP= variable appears in
the RANDOM statement. By default, ESTIMATE statement coefficients on random effects
are distributed equally across groups.
LOWER
LOWERTAILED
requests that the p-value for the t test be based only on values less than the t statistic. A
two-tailed test is the default. A lower-tailed confidence limit is also produced if you specify
the CL option.
SINGULAR=number
tunes the estimability checking as documented for the SINGULAR= option in the CONTRAST
statement.
SUBJECT coeffs
SUB coeffs
sets up random-effect contrasts between different subjects when a SUBJECT= variable appears
in the RANDOM statement. By default, ESTIMATE statement coefficients on random effects
are distributed equally across subjects. For example, the ESTIMATE statement in the following
code from Example 56.5 constructs the difference between the random slopes of the first two
batches.
UPPER
proc mixed data=rc;
class batch;
model y = month / s;
random int month / type=un sub=batch s;
estimate 'slope b1 - slope b2' | month 1 / subject 1 -1;
run;
UPPERTAILED
requests that the p-value for the t test be based only on values greater than the t statistic. A
two-tailed test is the default. An upper-tailed confidence limit is also produced if you specify
the CL option.