Filter to Include Observations

The Filter to Include Observations field is an optional parameter that enables you to subset a data set. Only those observations that meet all of the conditions specified in the field are included in the analysis.

For example, to filter only diseased individuals from a data set containing a mixed population of diseased (sick) and healthy (healthy) individuals (as indicated in a column named DiseaseStatus), you could use the following simple WHERE expression:

WHERE DiseaseStatus = ‘sick’

Note: the word where has already been entered for you.

For more information about using filter fields, see The SAS WHERE Expression.