Table 1. Number of Social Information System forms, by data source type.

Source	Persons eligible1	Number of claims or forms
Medicaid	1,372	167,808
Medicare	1,071	25,444
Food Stamp	448	3,601
Public Assistance	49	292
DMS-1+2	1,384	1,384
DMS-12	1,384	3,584

¹Data were requested on 1,384 patients for a 1-year period following study entry date. Eligibility was determined by the existence of a valid case or client number for that data type.

²DMS-1 is a long-term care placement form.