OBJECTIVE To examine current US performance on transition from pediatric to adult health care and discuss strategies for improvement. METHODS The 2009-2010 National Survey of Children with Special Health Care Needs is a nationally representative sample with 17 114 parent respondents who have youth with special health care needs (YSHCN) ages 12 and 18. They are asked about transition to an adu...

Previous work introduced two measure-conjugacy invariants: the f-invariant (for actions of free groups) and Σ-entropy (for actions of sofic groups). The purpose of this paper is to show that the f-invariant is essentially a special case of Σ-entropy. There are two applications: the f-invariant is invariant under group automorphisms and there is a uniform lower bound on the f-invariant of a fact...

Elderly people from ethnic minority groups often experience different barriers in accessing health services. Earlier studies on access usually focused on types and frequency but failed to address the predictors of service barriers. This study examined access barriers to health services faced by older Chinese immigrants in Canada. Factor analysis results indicated that service barriers were rela...