Pedigree ID Variable

The Pedigree ID Variable field is used to specify the variable containing the different pedigrees in your data set.

This variable is used as the SUBJECT= variable for the RANDOM statement in PROC MIXED or PROC GLIMMIX.

Note : When this is specified, the number of K Matrix Square Root Variables specified should be the same as the size of the largest pedigree.

To Specify the Pedigree ID Variable:

Specify the Input SAS Data Set .

All of the variables in the specified input data set are displayed in the Available Variables field.

Examine the list of available variables.

Highlight the variable containing the pedigree identifiers.

Click to add the highlighted variable(s) to the Pedigree ID Variable field, as shown below:

Note : Leave the field blank if all of the individuals are from the same pedigree.