About 173,000 children are defined as eligible under state parameters in this issue brief, but are not considered eligible under federal parameters in this issue brief. There are two primary reasons for this discrepancy. First, approximately 114,000 of these children are considered child-only units under state parameters (making them eligible), but are not considered child-only units under federal parameters. Second, some states may exclude certain family members from the assistance unit (when considering family size and family total income) who are included under federal parameters. For example, the earnings of an older sister residing in the household are included under federal parameters in this issue brief, but are not included under some states’ parameters.