Understanding the Socioeconomic Status of International Immigrants in Chile Through Hierarchical Cluster Analysis: a Population‐Based Study

Immigration to Chile is not large (just under 2% of the total population) but has increased in recent years. This study aimed to analyse the socioeconomic status (SES) of immigrants in Chile and compare it with the Chilean‐born, by secondary data analysis of an anonymous nationally representative survey (CASEN, 2006). Immigrants are categorized into Low, Medium and High SES through hierarchical cluster analysis. Around 1 per cent of the total sample are international immigrants; an additional 0.7 per cent did not report their migration status. Self‐reported immigrants show great variability in their SES. Immigrants in the Low SES cluster appeared to be significantly younger than those in Medium and High SES, also more likely to be children, women and belong to an ethnic minority. Immigrants in the Low SES cluster appeared similar to the unemployed, poorest Chilean‐born but are more than eight years younger on average and more likely to be female. Immigrants to Chile are a unique group, with socio‐demographic characteristics that differ significantly from the Chilean‐born population, but there is great heterogeneity and complexity within this group. Cluster analysis provided a meaningful interpretation of the multidimensional concept of SES and allowed the identification of a vulnerable group of Low SES immigrants to Chile.     

Methylmercury Risks and EPA + DHA Benefits Associated with Seafood Consumption in Europe

The intake of methyl‐Hg and EPA + DHA through consumption of seafood in Europe as well as the associated probability of exceeding the provisional tolerable weekly intake (PTWI) and the recommended daily intake (RDI), respectively, were estimated by combining methyl‐Hg and EPA + DHA contents in the five most consumed seafood species with hypothesized consumption distributions for eight European countries, chosen on the basis of size and representative significance. Two estimators were used: plug‐in (PI) and tail estimation (TE). The latter was based on the application of the extreme value theory to the intakes distribution curves. Whereas contents data were collected from own database and published scientific papers, consumption data were obtained from statistical sources of the various countries. Seafood consumption levels varied considerably between countries, from 140 in the United Kingdom to 628.5 g/(person.week) in Iceland. The main consumed species were also different between countries. The probability of exceeding the methyl‐Hg PTWI ranged from 0.04% in the United Kingdom to 9.61% in Iceland. Concerning the probability of exceeding the RDI of EPA + DHA, Iceland was third, after Portugal (66.05%) and Spain (61.05%) and the United Kingdom was the last (0.32%). While TE was most accurate for small probabilities, PI yielded best estimates for larger probabilities.     

HCBS Spending and Nursing Home Admissions for 1915(c) Waiver Enrollees

Medicaid waiver programs for home- and community-based services (HCBS) have grown rapidly and serve a population at high risk for nursing home (NH) admission. This study utilized the Medicaid Analytic Extract Personal Summary File and the NH Minimum Data Set and tested whether higher levels of per-beneficiary HCBS spending were associated with (1) lower risk of long-term (90+ days) NH admission and (2) higher functional/cognitive impairment at admission for new enrollees in 1915(c) aged or aged and disabled waiver programs. Waiver enrollees in states and counties with higher HCBS spending were found to have lower risk of long-term NH admission and greater functional impairment at NH admission compared to waiver enrollees in states and counties with lower spending. This indicates that higher per-enrollee HCBS spending may enable waiver enrollees to remain in the community until their functional impairment becomes more severe.     

The challenges of interdisciplinary education and its application on teaching ergonomics

The education in Brazil is still strongly based on traditional teaching methods that reinforce a passive attitude of the student. Despite the educational guidelines indicate the need for more liberating and interdisciplinary methodologies, there are few actions for change. Within this context, interdisciplinary appears as an important tool to help the creation of a new thinking in education, proposing the connection between the parts of an area of knowledge. In this way leading the student to develop a more critical and reflective thinking about the reality of the community where he lives. Being understood ergonomics as a scientific discipline that looks for the interactions among humans and other elements of a system in order to optimize human well-being and overall system performance, interdisciplinary has become essential in this process. The aim of this study was to discuss the educational foundations of interdisciplinarity and their applicability in the teaching of ergonomics in the context of Brazil.     

Accessibility for all: going from theory to practice

The present work demonstrates, through a case study, the importance of theoretical knowledge in practical application of spatial accessibility in order to guarantee equal conditions for all people in the movement and use of space. Initially there was a literature review on the accessibility of space and how design in a accessible way. Next, we show one makeover proposal in one public school that wants to provide access to people with disabilities. This makeover was done and so we could evaluate the buildings changes through the method of accompanied walk with two people. Finally we present the main results and discussions.     

On optimal allocation of redundant components for series and parallel systems of two dependent components

In this paper we consider the problem of optimal allocation of a redundant component in the case of series and parallel systems of two components when all the components are dependent. Whereas this problem has been extensively treated for the case of independent components, the case of dependent components has not received too much attention. In this paper we show that for this problem the main tools are the joint stochastic orders introduced by Shanthikumar and Yao (1991).     

Recommendations on the statistical analysis of the Comet assay

In 2010, the Statisticians in the Pharmaceutical Industry (PSI) Toxicology Special Interest Group met to discuss the design and analysis of the Comet assay. The Comet assay is one potential component of the package of safety studies required by regulatory bodies. As these studies usually involve a three-way nested experimental design and as the distribution of the measured response is usually either lognormal or lognormal plus a point mass at zero, the analysis is not straightforward. This has led to many different types of analysis being proposed in the literature, with several different methods applied within the pharmaceutical industry itself. This article summarises the PSI Toxicology Group's discussions and recommendations around these issues.     

Relationships in a new country: A qualitative study of the social connections of refugee youth resettled in South Australia

Australia's approach to immigration, as internationally, is largely concerned with state sovereignty, border protection and restrictionism towards asylum seekers. However, with just under a million refugees currently residing in Australia, and with 13,750 more added to this number each year, there is also an interest in ensuring that those who are granted humanitarian protection are socially integrated. This article reports on a qualitative investigation of the integration experiences of 85 refugee adolescents aged 13–17 years resettled in Adelaide, South Australia. It explores, in particular, the role of social connectedness in the integration process. Relationships with family, ethnic group and host country are believed to affect multiple and interrelated integration outcomes including language acquisition, cultural knowledge, belonging, identity, civic engagement, social and economic participation, and access to public services. This research found that young people must negotiate the integration process with variable, and in many cases limited, support from the network of social connections surrounding them. We suggest that policy and programmes which strengthen the relationships young people have with others have the potential to enhance integration outcomes.     

Psychotropic drug classification based on sleep–wake behaviour of rats

Summary.  The aim of the paper is to present methodology for the classification of potential psychotropic drugs on the basis of their activity. We first sketch the background of this class of drugs and then zoom in on so-called pharmacoelectroencephalogram studies. These data pose some statistical challenges. For classification purposes, we propose a flexible hierarchical discriminant analysis tool, allowing us to take the specific nature of the drug class into account, as well as the features of the mixed models, in combination with fractional polynomials, fitted to the electroencephalogram data. The method is evaluated against the background of existing methods. The method's performance is studied by using a comprehensive analysis of a large electroencephalogram data set.