This article introduces the use of regression models based on the Poisson distribution as a tool for resolving common problems in analyzing aggregate crime rates. When the population size of an aggregate unit is small relative to the offense rate, crime rates must be computed from a small number of offenses. Such data are ill-suited to least-squares analysis. Poisson-based regression models of ...

INTRODUCTION Distinctions between rural and urban environments produce different frequencies of traumatic exposures and psychiatric disorders. We examine the prevalence of psychiatric disorders and frequency of trauma exposures by position on the rural-urban continuum. METHODS The National Comorbidity Survey Replication (NCS-R) was used to evaluate psychiatric disorders among a nationally-rep...

BACKGROUND Associations between pediatric emergency department (ED) visits and ambient concentrations of particulate matter ≤ 2.5 μm in diameter (PM2.5) have been reported in previous studies, although few were performed in nonmetropolitan areas. OBJECTIVE We estimated associations between daily PM2.5 concentrations, using a two-stage model that included land use parameters and satellite aero...

Abstract We investigate the competitive effects of entry in food retail sector nonmetropolitan counties United States from 1998 to 2014. pay particular attention period that covers Great Recession, which disrupted market structure across a number industries. Using county‐level panel dataset, we use seminal model infer local sector. estimate thresholds over time, then describe rate decline profi...

The 1996 Welfare Reform Act (PRWORA) institutes a maximum sixty-month “life-time” benefit window for TANF block-grant recipients, involving TANF beneficiaries actually finding paid employment somewhere in the extant labor force. We believe that this welfare-to-work transition constitutes the most important element of the welfare reform initiative among states in the U.S. because it reflects the...