title: Exploring geographic variation in US mortality rates using a spatial Durbin approach.
abstract: Previous studies focused on identifying the determinants of mortality in US counties have examined the relationships between mortality and explanatory covariates within a county only, and have ignored the well-documented spatial dependence of mortality. We challenge earlier literature by arguing that the mortality rate of a certain county may also be associated with the features of its neighboring counties beyond its own features. Drawing from both the spillover (i.e., same direction effect) and social relativity (i.e., opposite direction effect) perspectives, our spatial Durbin modeling results indicate that both theoretical perspectives provide valuable frameworks to guide the modeling of mortality variation in US counties. Our empirical findings support that mortality rate of a certain county is associated with the features of its neighbors beyond its own features. Specifically, we found support for the spillover perspective in which the percentage of the Hispanic population, concentrated disadvantage, and the social capital of a specific county are negatively associated with the mortality rate in the specific county and also in neighboring counties. On the other hand, the following covariates fit the social relativity process: health insurance coverage, percentage of non-Hispanic other races, and income inequality. Their direction of the associations with mortality in the specific county is opposite to that of the relationships with mortality in neighboring counties. Methodologically, spatial Durbin modeling addresses the shortcomings of traditional analytic approaches used in ecological mortality research such as ordinary least squares, spatial error, and spatial lag regression. Our results produce new insights drawn from unbiased estimates.
authors: Department of Sociology, University at Albany, State University of New York, Tel:+1-814-777-6592, 351 Arts & Sciences Building, 1400 Washington Ave., Albany, NY 12222, USA.
authors: Tse-Chuan
authors: TC
authors: Yang
authors: Department of Sociology, Population Research Institute, The Pennsylvania State University, 712 Oswald Tower, University Park, PA 16802, USA.
authors: Aggie
authors: A
authors: Noah
authors: Population Research Institute, Social Science Research Institute, The Pennsylvania State University, 801 Oswald Tower, University Park, PA 16802, USA.
authors: Carla
authors: C
authors: Shoff
keywords: income inequality; mortality; social capital; social relativity; spatial Durbin modeling; spatial spillover
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