OBJECTIVES This study assessed whether income inequality and primary care physician supply have a different effect on mortality among Blacks compared with Whites. METHODS We conducted a multivariate ecologic analysis of 1990 data from 273 US metropolitan areas. RESULTS Both income inequality and primary care physician supply were significantly associated with White mortality (P < .01). Afte...

The health problems faced by rural and remote communities are complex and not amenable to simple or short-term solutions. The Australian Rural Health Research Collaboration, which comprises rural research centres, area health services and policy makers in NSW, investigates these problems. Founded in 2002, it has grown to become the leading rural research collaboration in Australia. It aims to: ...

Population health is a relatively new term that has not yet been precisely defined. Is it a concept of health or a field of study of health determinants? We propose that the definition be "the health outcomes of a group of individuals, including the distribution of such outcomes within the group," and we argue that the field of population health includes health outcomes, patterns of health dete...

Multivariate failure time data arise frequently in survival analysis. A commonly used technique is the working independence estimator for marginal hazard models. Two natural questions are how to improve the efficiency of the working independence estimator and how to identify the situations under which such an estimator has high statistical efficiency. In this paper, three weighted estimators ar...

While the growth of urbanization, worldwide, has improved the lives of migrants from the hinterland, it also raises health risks related to population density, concentrated poverty and the transmission of infectious disease. Will megacity regions evolve into socially infected breeding grounds for the rapid transmission of disease, or can they become critical spatial entities for the protection ...