Reliability but not bias: Developing a scale to measure preferred channels for risk information during the COVID pandemic

To develop a new measure of preferred sources for risk information, two studies asked respondents to indicate what channels they were reliant on for information about COVID-19, from 25 news channels ranging across the political spectrum. Unexpectedly, dependencies clustered around level of reliability rather than the political orientation of the news channel. In other words, each cluster included media channels from both the left and right side of the political spectrum, while dependencies clustered into sources that varied by the degree to which their content is reliable. Participants who turned to lower reliability channels indicated lower risk perceptions, less accurate probability estimations, reduced vaccination intentions, and lower protective behavioral intentions. Those inclined to use higher reliability channels indicated higher risk perceptions, more accurate probability estimations, increased vaccination intentions, and higher protective behavioral intentions. These relationships are discussed in terms of implications for our understanding of source reliance and risk perception, information sufficiency, and implications for both future research and public health interventions.     

New approaches for censored longitudinal data in joint modelling of longitudinal and survival data,with application to HIV vaccine studies

In HIV vaccine studies, longitudinal immune response biomarker data are often left-censored due to lower limits of quantification of the employed immunological assays. The censoring information is important for predicting HIV infection, the failure event of interest. We propose two approaches to addressing left censoring in longitudinal data: one that makes no distributional assumptions for the censored data—treating left censored values as a “point mass” subgroup—and the other makes a distributional assumption for a subset of the censored data but not for the remaining subset. We develop these two approaches to handling censoring for joint modelling of longitudinal and survival data via a Cox proportional hazards model fit by h-likelihood. We evaluate the new methods via simulation and analyze an HIV vaccine trial data set, finding that longitudinal characteristics of the immune response biomarkers are highly associated with the risk of HIV infection.

     

RENT CREATION AND RENT SHARING: NEW MEASURES AND IMPACTS ON TOTAL FACTOR PRODUCTIVITY

This analysis proposes new measures of rent creation and rent sharing and assesses their impact on productivity on cross‐country‐industry panel data. We find first that: (1) anticompetitive product market regulations positively affect rent creation and (2) employment protection legislation boosts hourly wages, particularly for low‐skill workers. However, we find no significant impact of this employment legislation on rent sharing, as the hourly wage increases are offset by a negative impact on hours worked. Second, using regulation indicators as instruments, we find that rent creation and rent sharing both have a substantial negative impact on total factor productivity. (JEL E22, E24, O30, L50, O43, O47, C23)     

Hospitality in Family Therapy Practice: A Further Engagement with Jacques Derrida

Derrida's concept of hospitality has been proposed by some authors working from a collaborative perspective as an interesting tool to reflect on the therapeutic relationship as an ethical relationship in which the therapist develops a welcoming openness to the client. In this paper, we engage with this recent emphasis on the therapist's ethical position of welcoming the client's otherness and turn to Jacques Derrida's original texts with the aim of developing an in‐depth understanding of what exactly is at stake in this therapeutic position of hospitality. This reading evolves into an understanding of how Derrida's notion of hospitality invites clinicians to identify how the therapeutic position intricately intertwines healing and violence. The concept of hospitality calls on therapists to accept the complexity of therapeutic responsibility as a form of supportive presence that necessarily and simultaneously involves the violence of appropriation and power difference.     

Exposure diversity as a design principle for recommender systems

Personalized recommendations in search engines, social media and also in more traditional media increasingly raise concerns over potentially negative consequences for diversity and the quality of public discourse. The algorithmic filtering and adaption of online content to personal preferences and interests is often associated with a decrease in the diversity of information to which users are exposed. Notwithstanding the question of whether these claims are correct or not, this article discusses whether and how recommendations can also be designed to stimulate more diverse exposure to information and to break potential ‘filter bubbles’ rather than create them. Combining insights from democratic theory, computer science and law, the article makes suggestions for design principles and explores the potential and possible limits of ‘diversity sensitive design’.     

Comprehensive maternity support and shared care in Switzerland: Comparison of levels of satisfaction

Background

According to the woman-centred care model, continuous care by a midwife has a positive impact on satisfaction. Comprehensive support is a model of team midwifery care implemented in the large Geneva University Hospitals in Switzerland, which has organised shared care according to the biomedical model of practice. This model of care insures a follow up by a specific group of midwives, during perinatal period.

Search and Recombination Process to Innovate: A Review of the Empirical Evidence and a Research Agenda

The view of innovation as a process of searching and recombining existing knowledge elements has been adopted in several industries. The innovation management literature has recognized the fundamental role that search and recombination play in innovation development. However, the relevant research has provided complex, fragmented and mixed results. The authors aim to identify areas of convergence and provide directions for future research by collecting empirical evidence regarding how firms conduct the search and recombination process. They conducted a systematic literature review of 87 empirical articles in the innovation management field. The review reveals differences among the solutions adopted both within and across organizational boundaries. Specifically, it shows that the variety and diversity of knowledge elements are critical in creating breakthrough innovations. Therefore, this paper discusses how to provide access to a variety of knowledge elements. It also highlights other fundamental questions calling for further investigation, such as how scientific knowledge elements are successfully recombined and how recombination and search dynamics occur in small and medium‐sized firms. The review concludes by summarizing the current state of affairs and suggests promising directions for future investigation.     

Analysis of two-phase sampling data with semiparametric additive hazards models

Under the case-cohort design introduced by Prentice (Biometrica 73:1–11, 1986), the covariate histories are ascertained only for the subjects who experience the event of interest (i.e., the cases) during the follow-up period and for a relatively small random sample from the original cohort (i.e., the subcohort). The case-cohort design has been widely used in clinical and epidemiological studies to assess the effects of covariates on failure times. Most statistical methods developed for the case-cohort design use the proportional hazards model, and few methods allow for time-varying regression coefficients. In addition, most methods disregard data from subjects outside of the subcohort, which can result in inefficient inference. Addressing these issues, this paper proposes an estimation procedure for the semiparametric additive hazards model with case-cohort/two-phase sampling data, allowing the covariates of interest to be missing for cases as well as for non-cases. A more flexible form of the additive model is considered that allows the effects of some covariates to be time varying while specifying the effects of others to be constant. An augmented inverse probability weighted estimation procedure is proposed. The proposed method allows utilizing the auxiliary information that correlates with the phase-two covariates to improve efficiency. The asymptotic properties of the proposed estimators are established. An extensive simulation study shows that the augmented inverse probability weighted estimation is more efficient than the widely adopted inverse probability weighted complete-case estimation method. The method is applied to analyze data from a preventive HIV vaccine efficacy trial.     

A National Survey of the Provision of Sexual Health Clinical Services by Public Health in Canada: First Insights

Objectives: Data documenting the scope of sexual health clinical services offered as public health in Canada are unavailable. This article provides first insights into the scope of STI and clinical sexual health services available nationally. Methods: Data were gathered using an online survey of 113 Canadian public health units. Results: Almost half of the clinics were not providing expedited partner therapy, one third were not providing point of care testing for HIV and one third were not using syndromic management of sexually transmitted infections (STIs). Low rates of physician support were evident. Conclusion: Given the ever-higher rates of STIs, findings from this study identify important challenges to providing comprehensive services.