Trait Variables

Use this field to specify trait variables to be tested for association with the marker variables.

Specific types of trait variables might be required, depending on the process that you are running.

Note: If you select more than one trait variable, they must all be of the same type (binary, for example).

The table below lists process-specific requirements:

Process	Trait Requirements1
Case-Control Association	The traits must be binary. Note: If the Dominant, Recessive, and/or MAX tests are selected on the Options tab, the trait variables must be numeric with values 0 and 1.
Genetics Q-K Analysis Workflow	Binary, continuous, and ordinal traits are all valid. Specify the trait type using the Type of Trait drop-down menu.
Genetics Rare Variants Workflow	Binary, continuous, count, and survival traits are all valid. Specify the trait type using the Type of Trait drop-down menu.
Haplotype Trend Regression	Binary, continuous, count, nominal, ordinal, and survival traits are all valid. Specify the trait type using the Type of Trait drop-down menu.
QTL IM, CIM and MIM Analysis	The traits must be continuous.
Imputed SNP-Trait Association	Binary, continuous, count, nominal, ordinal, and survival traits are all valid. Specify the trait type using the Type of Trait drop-down menu.
Marker-Trait Association	Binary, continuous, count, nominal, ordinal, and survival traits are all valid. Specify the trait type using the Type of Trait drop-down menu.
Multiple SNP-Trait Association	Binary, continuous, count, nominal, ordinal, and survival traits are all valid. Specify the trait type using the Type of Trait drop-down menu.
PCA for Population Stratification	The traits must either be numeric binary or continuous.
Q-K Mixed Model	Binary, continuous, and ordinal, traits are all valid. Specify the trait type using the Type of Trait drop-down menu.
QTL Single Marker Analysis	The traits must be continuous.
SNP-SNP Interactions	Binary, continuous, count, nominal, ordinal, and survival traits are all valid. Specify the trait type using the Type of Trait drop-down menu.
SNP-Trait Association	Binary, continuous, count, nominal, ordinal, and survival traits are all valid. Specify the trait type using the Type of Trait drop-down menu.
Survey SNP-Trait Association	Binary, continuous, nominal, and ordinal traits are all valid. Specify the trait type using the Type of Trait drop-down menu.
TDT	The traits must be binary.

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1

See Type of Trait for more information on the different types of traits.

To Specify One or More Trait Variables:

Specify the Input SAS Data Set.

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

Examine the list of available variables.

Highlight the desired variables. Left-click a single variable, or hold down Ctrl while left-clicking multiple variables.

Click to add the highlighted variable to the Trait Variables field, as shown below: