PROC GLMMOD Statement

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The GLMMOD Procedure

PROC GLMMOD Statement

PROC GLMMOD < options > ;

The PROC GLMMOD statement invokes the GLMMOD procedure. It has the following options:

DATA=SAS-data-set

specifies the SAS data set to be used by the GLMMOD procedure. If you do not specify the DATA= option, the most recently created SAS data set is used.

NAMELEN=n

specifies the maximum length for an effect name. Effect names are listed in the table of parameter definitions and stored in the EFFNAME variable in the OUTPARM= data set. By default, n=20. You can specify $20 \lt n \leq 200$ if 20 characters are not enough to distinguish between effects, which may be the case if the model includes a high-order interaction between variables with relatively long, similar names.

NOPRINT

suppresses the normal display of results. This option is generally useful only when one or more output data sets are being produced by the GLMMOD procedure. Note that this option temporarily disables the Output Delivery System (ODS); see Chapter 14, "Using the Output Delivery System," for more information.

ORDER=DATA | FORMATTED | FREQ | INTERNAL

specifies the order in which you want the levels of the classification variables (specified in the CLASS statement) to be sorted. This ordering determines which parameters in the model correspond to each level in the data.

The ORDER= option can take the following values.

FREQ Levels are sorted by descending frequency count so that levels with the most observations come first.

DATA Levels are sorted in the order in which they first occur in the input data.

INTERNAL Levels are sorted by the internal value.

FORMATTED Levels are ordered by the external formatted value.

If you omit the ORDER= option, PROC GLMMOD orders by the external formatted value.

OUTPARM=SAS-data-set

names an output data set to contain the information regarding the association between model effects and design matrix columns.

OUTDESIGN=SAS-data-set

names an output data set to contain the columns of the design matrix.

PREFIX=name

specifies a prefix to use in naming the columns of the design matrix in the OUTDESIGN= data set. The default prefix is Col and the column name is formed by appending the column number to the prefix, so that by default the columns are named Col1, Col2, and so on. If you specify the ZEROBASED option, the column numbering starts at zero, so that with the default value of PREFIX= the columns of the design matrix in the OUTDESIGN= data set are named Col0, Col1, and so on.

ZEROBASED

specifies that the numbering for the columns of the design matrix in the OUTDESIGN= data set should begin at 0. By default it begins at 1, so that with the default value of PREFIX= the columns of the design matrix in the OUTDESIGN= data set are named Col1, Col2, and so on. If you use the ZEROBASED option, the column names are instead Col0, Col1, and so on.

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FREQ	Levels are sorted by descending frequency count so that levels with the most observations come first.
DATA	Levels are sorted in the order in which they first occur in the input data.
INTERNAL	Levels are sorted by the internal value.
FORMATTED	Levels are ordered by the external formatted value.