Covariate adjustment and estimation of mean response in randomised trials

Analyses of randomised trials are often based on regression models which adjust for baseline covariates, in addition to randomised group. Based on such models, one can obtain estimates of the marginal mean outcome for the population under assignment to each treatment, by averaging the model‐based predictions across the empirical distribution of the baseline covariates in the trial. We identify under what conditions such estimates are consistent, and in particular show that for canonical generalised linear models, the resulting estimates are always consistent. We show that a recently proposed variance estimator underestimates the variance of the estimator around the true marginal population mean when the baseline covariates are not fixed in repeated sampling and provide a simple adjustment to remedy this. We also describe an alternative semiparametric estimator, which is consistent even when the outcome regression model used is misspecified. The different estimators are compared through simulations and application to a recently conducted trial in asthma.     

Reversible jump methods for generalised linear models and generalised linear mixed models

A reversible jump algorithm for Bayesian model determination among generalised linear models, under relatively diffuse prior distributions for the model parameters, is proposed. Orthogonal projections of the current linear predictor are used so that knowledge from the current model parameters is used to make effective proposals. This idea is generalised to moves of a reversible jump algorithm for model determination among generalised linear mixed models. Therefore, this algorithm exploits the full flexibility available in the reversible jump method. The algorithm is demonstrated via two examples and compared to existing methods.     

Elder Abuse Coverage in Newspapers: Regional Differences and its Comparison to Child-Abuse Coverage

ABSTRACT

Dozens of studies have examined how the press portrays crime. Most of these studies focus on some aspect of the criminal or the response to the event. Few have considered the portrayal of victims and even fewer have examined the way the media portrays older victims. To fill this void, this study examines (1) whether elder abuse coverage varies across newspapers and (2) how the extent of elder abuse coverage compares to child-abuse coverage. Results indicate that regional differences appear to exist and child abuse receives far more coverage than elder abuse. Implications are provided.     

The Downside of Cyberspace

This article explores the actual and potential misuses of the World Wide Web in regard to access to “paper mills” and other information sources that make plagiarism relatively easy. The authors describe their experience accessing such paper mill products and present results of a quasi-experiment in which participants graded three papers: one an actual student submission and two purchased off the Internet. Findings suggest reason for concern about student misuse of the World Wide Web. The authors argue that different strategies for the design of class assignments must be considered by all educational programs to diminish enhanced opportunities for “cybercheating.”     

How Psychological Telehealth Can Alleviate Society's Mental Health Burden: A Literature Review

Mental health professionals must establish new means to reach those in need that face obstacles related to geographical location, time limitations, and health. With the high incidence of mental illness, as well as the hypothesized increase in coming years, telehealth modalities propose a novel and far-reaching alternative to traditional therapy. This article outlines the positive aspects and interdisciplinary possibilities when telehealth is incorporated into mental health practice. Novel outlets including mHealth and the utilization of computer tablets as mental health facilitators are outlined. Considerations for practice including training are discussed, as well as potential future directions for the field. Available data supports telehealth as an effective mode for the treatment of clients who are unable to pursue mental health services in their current form. However, careful consideration and training for the mental health professional is needed if telehealth is to be effectively used to alleviate the mental health burden.     

Validating New Measures of the Fear of Crime

This study assesses the scaling properties of some new measures of the fear of crime. The new conceptualization—a range of distinct but related constructs that constitute the fear of crime—comprises the interplay between emotion, risk perception and environmental perception. Data from a small‐scale survey are analysed using confirmatory factor analysis showing good scaling properties of the multiple indicators. Two implications of the new conceptualization for the rationality of the fear of crime are discussed. First, perceptions of the risk of crime seem to be a product of how individuals make sense of their social and physical environment. Second, the fear of crime may constitute such evaluations of community cohesion and moral consensus as well as specific experiences of ‘fear’ of ‘crime’—a way of seeing as well as a way of feeling. The conclusions consider ramifications for the rationality of the fear of crime, particularly in the context of reassurance policing in England and Wales.     

Assembling life history narratives from quantitative longitudinal panel data: What’s the story for families using social work?

Abstract

Embedded within quantitative longitudinal panel or cohort studies is narrative potential that is arguably untapped but might enrich our understanding of individual and social lives across time. This paper discusses a methodology to assemble the life history narratives of families using social work by drawing on quantitative data from the British Household Panel Survey. It explores whether this person-centred approach helps us to understand the counter-intuitive results of a parallel multivariate analyses, which suggest that families using social work fare worse than similar others over time. Our findings are tentative, due to the experimental use of this narrative method and the limits of social work information in the data-set. Nonetheless, the life histories presented bring to light complexities, diversity and the non-linear pathways between families’ needs, support and outcomes that the aggregates obscure. We conclude that reconstructing families’ lives in this way, especially in the absence of complementary longitudinal qualitative data, affords the wider opportunity to interrogate and better understand the findings of quantitative longitudinal studies.