Bayesian estimation of extropy and goodness of fit tests

Extropy, a complementary dual of entropy, is considered in this paper. A Bayesian approach based on the Dirichlet process is proposed for the estimation of extropy. A goodness of fit test is also developed. Many theoretical properties of the procedure are derived. Several examples are discussed to illustrate the approach.     

The Effect of School Choice on Participants: Evidence from Randomized Lotteries

School choice has become an increasingly prominent strategy for enhancing academic achievement. To evaluate the impact on participants, we exploit randomized lotteries that determine high school admission in the Chicago Public Schools. Compared to those students who lose lotteries, students who win attend high schools that are better in a number of dimensions, including peer achievement and attainment levels. Nonetheless, we find little evidence that winning a lottery provides any systematic benefit across a wide variety of traditional academic measures. Lottery winners do, however, experience improvements on a subset of nontraditional outcome measures, such as self‐reported disciplinary incidents and arrest rates.     

Breaking barriers—provision and participation in an out‐of‐school centre

This paper uses a research and development project – the A Space project in Hackney – as an exemplar for discussion of policy and practice issues arising from the recent expansion of out‐of‐school child care and study support services. In particular, the authors explore children's participation rights and multi‐agency working, two key principles upon which A Space is based. The paper suggests that current government out‐of‐school policy raises key questions about the siting, staffing, coordination and costs of future services; and that underlying these are more fundamental questions about: how children should be spending their time; and whose perspectives on this should be taken into account. Copyright © 2001 John Wiley & Sons, Ltd.     

Access barriers to mental health services for older adults from diverse populations: perspectives of leaders in mental health and aging

This project is based on the results of telephone surveys with 52 local, state, and national informed respondents including policymakers, county leaders, planners, and advocates in mental health and aging with a particular focus on the states of California and Florida. This article addresses challenges to access to mental health services for diverse older adults including barriers related to race and ethnicity, socioeconomic status, location, age, gender, immigrant status, language, sexual orientation, and diagnosis. The article also highlights broad themes that emerged including (1) the importance of outreach and transportation tailored to diverse elders, and (2) recruitment of diverse staff and training related to diversity. The article concludes with policy and practice recommendations to reduce these disparities in access to mental health services for diverse populations of older adults.     

An assessment of the statistical methods used to analyse toxicology studies

The Statisticians in the Pharmaceutical Industry Toxicology Special Interest Group has collated and compared statistical analysis methods for a number of toxicology study types including general toxicology, genetic toxicology, safety pharmacology and carcinogenicity. In this paper, we present the study design, experimental units and analysis methods.     

Review of the statistical analysis of the dog telemetry study

In 2008, the PSI Toxicology Special Interest Group met to discuss the design and analysis of dog telemetry studies. The dog telemetry study is one component of the integrated cardiovascular assessment required by regulatory bodies. Although there are guidelines for these studies, little is said about the statistical analysis. With parameters of interest measured continually over time, in studies typically involving four dogs, the analysis is not straightforward. This has led to many different types of analysis being proposed in the literature, with many different methods applied within the pharmaceutical industry itself. This paper summarizes the PSI Toxicology group's discussions and recommendations around these issues.     

The Grief Experience of Prison Inmate Hospice Volunteer Caregivers

Correctional institutions are obligated to provide end-of-life care to a population with complex medical needs. Prison hospices are increasingly being formed to address this demand. Few empirical studies have examined the impact of caring for dying inmates on the hospice inmate volunteers, who, in several prison health care systems, provide direct care. In this study, experiences of the inmate hospice volunteers with death were investigated to illuminate their grief processes. Understanding the bereavement needs of hospice volunteers and how prison hospice volunteers navigate grief and remain committed to providing excellent hospice care can inform the grief processes and practices of hospice care professionals.