This paper is the first to analyze eligibility and participation spells and estimate dynamic models of SSI participation by the aged. We first describe eligibility and participation spells and estimate competing-risk models of the determinants of transitions. Next, we present evidence of...

Previous researchers have noted that the 'categorical' Medicaid eligibility accompanying the welfare programs Aid to Families with Dependent Children (AFDC) and Supplemental Security Income (SSI) often far exceeds the value of these programs' cash benefits. It may be the case that the...

The Supplemental Security Income (SSI) program provides an income and health care safety net for the elderly poor. The phenomenon of apparently eligible households that do not enroll in, or 'take up' SSI has been noted as a severe problem since the program's inception in 1974. This paper...