PROC PHREG: LSMESTIMATE Statement :: SAS/STAT(R) 9.22 User's Guide

The PHREG Procedure

LSMESTIMATE Statement

LSMESTIMATE model-effect <'label'> values <divisor= $\text{[math]}$ >
<, <'label'> values <divisor= $\text{[math]}$ >> <, ...>
< / options> ;

The LSMESTIMATE statement provides a mechanism for obtaining custom hypothesis tests among least squares means.

Table 64.6 summarizes important options in the LSMESTIMATE statement. If the BAYES statement is specified, the ADJUST=, STEPDOWN, TESTVALUE, LOWER, UPPER, and JOINT options are ignored. The PLOTS= option is not available for the maximum likelihood anaysis. It is available only for the Bayesian analysis.

Table 64.6 Important LSMESTIMATE Statement Options
Option	Description
Construction and Computation of LS-Means
AT	Modifies covariate values in computing LS-means
BYLEVEL	Computes separate margins
DIVISOR=	Specifies a list of values to divide the coefficients
OM=	Specifies the weighting scheme for LS-means computation as determined by a data set
SINGULAR=	Tunes estimability checking
Degrees of Freedom and p-values
ADJUST=	Determines the method for multiple comparison adjustment of LS-means differences
ALPHA= $\text{[math]}$	Determines the confidence level ( $\text{[math]}$ )
LOWER	Performs one-sided, lower-tailed inference
STEPDOWN	Adjusts multiple comparison p-values further in a step-down fashion
TESTVALUE=	Specifies values under the null hypothesis for tests
UPPER	Performs one-sided, upper-tailed inference
Statistical Output
CL	Constructs confidence limits for means and mean differences
CORR	Displays the correlation matrix of LS-means
COV	Displays the covariance matrix of LS-means
E	Prints the $\text{[math]}$ matrix
ELSM	Prints the $\text{[math]}$ matrix
JOINT	Produces a joint $\text{[math]}$ or chi-square test for the LS-means and LS-means differences
PLOTS=	Requests ODS statistical graphics of means and mean comparisons
SEED=	Specifies the seed for computations that depend on random numbers

For details about the syntax of the LSMESTIMATE statement, see the section LSMESTIMATE Statement of Chapter 19, Shared Concepts and Topics.

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