The Filter to Include Healthcare Encounters for RBM field enables you to filter rows from the HO data set to choose the appropriate records to subset to health-care encounters of interest. Risk indicators are then calculated using this subset of health-care encounters only.Note : It is necessary to use quotation marks when filtering data using values of a character variable ( HOTERM = "HOSPITAL" , for example), but no quotation marks are required for filtering by values of a numeric variable .The syntax of this filter expression follows the syntax of SAS WHERE statements . For more information about this syntax, see The SAS WHERE Expression .