Eric Stallard is a research scholar in actuarial demography at Duke University's Center for Demographic Studies (now part of the Duke Population Research Institute), where he collaborated extensively with Kenneth G. Manton on multi-state disability models and the National Long-Term Care Survey (NLTCS) analysis series. His work bridges actuarial science and demographic methods, producing empirical estimates of disability incidence, prevalence, duration, intensity, and cost that underpin long-term care insurance projections and federal disability policy analysis. Stallard's contribution to actuarial demography parallels the OCACT mortality table tradition for DI beneficiaries: both apply multi-state Markov methods to insurance-relevant populations, but Stallard's focus is on the elderly general population rather than the DI program specifically.