Heart Trouble and Racial Group Identity: Exploring Ethnic Heterogeneity Among Black Americans

Heart disease is the leading cause of death among men and women in the United States, and compared to other racial and ethnic groups, Blacks between the ages of 45 and 65 have the highest likelihood of dying from heart disease. Nevertheless, relatively little is known about intragroup variation among the US Black population. In this study, utilizing a nationally representative sample of Black Americans, we examine the relationship between heart trouble and racial group identity for two groups of Blacks: African Americans and Caribbean Blacks. We include two measures of racial group identity: closeness to other Blacks and Black group evaluation. Our results reveal three important patterns. First, closeness to other Blacks is suppressed by Black group evaluation. Second, at low levels of closeness to other Blacks, there is little difference between African Americans and Caribbean Blacks in the probability of heart trouble. However, as closeness to other Blacks increases, the probability of heart trouble increases for African Americans, but decreases for Caribbean Blacks. Finally, with respect to positive Black group evaluation, both African Americans and Caribbean Blacks benefit and experience a lower probability of heart trouble.     

Social Structural Location and Vocabularies of Participation: Fostering a Collective Identity in Urban Agriculture Activism

Contextualized within the visible inequality that permeates its local food landscape and the broader elitist food culture of California's San Francisco Bay Area, Oakland's urban agriculture movement comprises actors with rich vocabularies of motive for participation. Drawing from 25 in‐depth interviews with movement activists, I uncover a racial and social class homogeneity among participants that contributes to the formation of a collective identity but also limits the movement's outcomes in important ways. This research draws from Bourdieu's theory of class distinction and social movement theories of collective identity formation to contribute to literature on the reproduction of class and racial privilege in alternative food activism. I find that narratives for movement involvement converge on three discourses: possession of education‐derived knowledge to contend with the agroindustrial complex, the conflation of the creation of community through urban food growing with inclusivity, and a missionary‐like desire to educate others as to the benefits of growing their own food. I argue that the movement could benefit from a more diverse repertoire of action generated from a greater integration of racially and economically diverse actors working together to reorient the food system toward local food production alternatives.     

What is a family? Constructions of family and parenting after a custody transfer from birth parents to foster parents

The subject of stability for children in long‐term foster care is an emerging field within social work with vulnerable children. In Sweden, the adoption of foster children is not a common occurrence. Instead, when a child has been placed in foster care for 3 years, the local social welfare committee will consider whether the custody of the child should be transferred to the foster parents regardless of the circumstances of the birth parents, in order to secure stability and a sense of family belonging. Consequently, custody transfers raise questions such as “who is family?” and “who is a parent?” This qualitative interview study with custodians and young people who have experienced custody transfer highlights that who counts as family and as a parent is ambiguous. This article draws attention to how negotiations about family and parenthood revolve around biological, emotional, and relational dimensions. Furthermore, we show that stability for children in care has to be understood in terms of processes over time and not as the result of a single decision of custody transfer. Consequently, social workers need to take several aspects into account when they assess family belonging and stability for children in foster care.     

Fragility index of block tailed vectors

Financial crises are a recurrent phenomenon with important effects on the real economy. The financial system is inherently fragile and it is therefore of great importance to be able to measure and characterize its systemic stability. Multivariate extreme value theory provide us such a framework through the fragility index ( 11, 7 and 8). Here we generalize this concept and contribute to the modeling of the stability of a stochastic system divided into blocks. We will find several relations with well-known tail dependence measures in the literature, which will provide us immediate estimators. We end with an application to financial data.     

Validation of surrogate end points in multiple randomized clinical trials with failure time end points

Before a surrogate end point can replace a final (true) end point in the evaluation of an experimental treatment, it must be formally 'validated'. The validation will typically require large numbers of observations. It is therefore useful to consider situations in which data are available from several randomized experiments. For two normally distributed end points Buyse and co-workers suggested a new definition of validity in terms of the quality of both trial level and individual level associations between the surrogate and true end points. This paper extends this approach to the important case of two failure time end points, using bivariate survival modelling. The method is illustrated by using two actual sets of data from cancer clinical trials.     

EVALUATING SOCIAL LEARNING POTENTIALS GENERATED BY EU STRUCTURAL FUNDING PROGRAMMES

The EU structural funding programmes affect the circumstances in which people and organizations are to take part in regional development. The evaluation of this institutional impact poses a challenge to policy analysis. This paper suggests that the evolution of participation conditions can be evaluated by focusing on the social learning potential generated by the practices of programme implementation. Following Bourdieu, the context of social learning is described as a field; the crucial quality of a field is its level of autonomy. The analysis of the regional implementation of two Objective 5b programmes shows that the logic of structural funding restricts participation in many crucial ways. At the same time the constitution of social learning potential depends on the quality of the fields for which the programmes provide symbolic capital. However, policy implementation is non-linear by nature. The initiatives of civil actors and ‘reflexive practitioners’ can, for example, make a difference.     

Joint Modelling of Recurrent Infections and Antibody Response by Bayesian Data Augmentation

Abstract.  A joint dynamic model for the interdependence between infection, immunity and risk of disease is presented. Recurrent latent infections are modelled as realizations from a renewal process and antibody dynamics as a diffusion with a decreasing drift modified by the stimulating effect of the random infections. The augmented submodels are estimated simultaneously in one large Markov chain Monte Carlo algorithm. As an example, we consider the risk of recurrent ear infections when having only partially observed information on bacterial carriage and antibody concentrations.