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:

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Specify the Input SAS Data Set.

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

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Examine the list of available variables.

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Highlight the variable containing the pedigree identifiers.

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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.