A comparison of three methods of estimating the logistic regression coefficients

A Sampling experiment performed using data collected for a large clinical trial shows that the discriminant function estimates of the logistic regression coefficients for discrete variables may be severely biased. The simulations show that the mixed variable location model coefficient estimates have bias which is of the same magnitude as the bias in the coefficient estimates obtained using conditional maximum likelihood estimates but require about one-tenth of the computer time.     

Two-stage approaches to the analysis of occupancy data I: the homogeneous case (analysis of occupancy data)

Abstract

Occupancy models are used in statistical ecology to estimate species dispersion. The two components of an occupancy model are the detection and occupancy probabilities, with the main interest being in the occupancy probabilities. We show that for the homogeneous occupancy model there is an orthogonal transformation of the parameters that gives a natural two-stage inference procedure based on a conditional likelihood. We then extend this to a partial likelihood that gives explicit estimators of the model parameters. By allowing the separate modeling of the detection and occupancy probabilities, the extension of the two-stage approach to more general models has the potential to simplify the computational routines used there.     

The influence of perceived shared risk in crisis communication: Elaborating the situational theory of publics

The study explored whether perceived shared experience with a media portrayal could influence various cognitions—such as concern, sense of personal involvement, and desire to learn more—that are important for behavior change. This research used the situational theory of publics in order to evaluate whether perceived shared risk is an antecedent to the factors leading to communication behavior. In general, the findings from this experiment supported the idea that shared risk experience with portrayals in news coverage has the potential to influence problem recognition, involvement recognition, and a new variable that combines information seeking and processing: that of information gaining.     

Successful Aging And Creativity In Later Life

This study examined the meanings older people attached to successful aging and its relationship to creative activity. Thirty-six contributors to a senior art exhibition participated in this study and ranged in age from 60–93. Interviews with participants explored their understandings of successful aging and creativity, the factors viewed as necessary for each, and the benefits of creative activity and its relationship to successful aging. Qualitative data were coded by two independent reviewers. Content analysis confirmed six features of successful aging: a sense of purpose, interactions with others, personal growth, self-acceptance, autonomy, and health. The findings indicate that creative activity contributes to successful aging by fostering a sense of competence, purpose, and growth. Artistic creativity also facilitates successful aging by encouraging the development of problem-solving skills, motivation, and perceptions that translate into a practical creativity in the way these individuals manage their everyday lives.     

Measuring Knowledge,Attitudes and Behaviours Concerning Sustainable Development among Tenth Grade Students in Manitoba

In this paper we present standardized measures of tenth grade students’ knowledge, attitudes and behaviours concerning sustainable development as those concepts are understood in the United Nations Educational, Scientific and Cultural Organization, and we test the hypothesis that knowledge and favourable attitudes toward SD lead to favourable behaviours. Using a fairly representative random sample of 1,551 tenth grade students from the province of Manitoba, Canada, we crafted 3 indexes. There is a 20-item Index of Knowledge of SD with a good Cronbach alpha = 0.89, a 15-item Index of Attitudes Favourable Toward SD with alpha = 0.84 and a 15-item Index of Behaviours Favourable Toward SD with an alpha = 0.83. About 21% of the variation in our Behaviours Index scores could be accounted for by our Knowledge Index and Attitudes Index scores.     

Absent Role of the State: Analysis of Social Support to Older People with Disabilities in Rural China

China is experiencing rapid population ageing and already has 44 million older people with disabilities aged over 59 years. Yet social support of these older people with disabilities is undeveloped and not well researched. This article contributes by using a disability rights framework (right to life and protection, economic security and social support) to analyze local cases in rural China. It finds that, although the family is still the main provider of economic and care support to rural older people with disabilities, the absence of a state role in welfare provision has negative impacts on the well‐being of older and younger generations in rural families.     

Sports fans as crisis communicators on social media websites

Previous research has analyzed how organizations publicly respond in crisis situations. This study addresses a sports crisis, the University of Miami NCAA investigation, as an avenue for exploring how fans become surrogates for organizational crisis responses via the social media entity, Twitter. Using Coombs's (2007) strategy for reputation repair, analysis of 75 highly identified Miami fans with over 42,000 Twitter followers shows that fans were most likely to engage in (a) ingratiation, (b) reminder, (c) attack the accuser, and (d) divert attention as primary methods of coping with the scandal. New methods for reputation repair were also found within the analysis and implications for organizations, academic institutions, sports research, and crisis communication theory are articulated.     

Adverse Childhood Experiences and Healthcare Costs in Adult Life

ABSTRACT

The current study aims to present the prevalence of adverse childhood experiences and examine the healthcare costs associated with primary, allied, and specialist healthcare services. The Australian Longitudinal Study on Women’s Health is a general health survey of four nationally representative age cohorts. The current study uses 20 years of survey and administrative data (1996–2015) from the cohort born 1973–1978. Overall, 41% of women indicated at least one category of childhood adversity. The most commonly reported type of childhood adversity was having a household member with a mental illness (16%), with the most commonly reported ACES category being psychological abuse (17%). Women who had experienced adversity in childhood had higher healthcare costs than women who had not experienced adversity. The healthcare costs associated with experiences of adversity in childhood fully justify a comprehensive policy and practice review.