Penalized full likelihood approach to variable selection for Cox’s regression model under nested case–control sampling

Lifetime Data Analysis - Assuming Cox’s regression model, we consider penalized full likelihood approach to conduct variable selection under nested case–control (NCC) sampling....     

Marine protected areas and children’s dietary diversity in the Philippines

Fish living around the coral reefs in the Philippines provide livelihoods for more than a million local fishers and are an important source of protein for coastal communities. However, this rich resource is at risk from myriad threats, which consequently threaten human livelihoods, nutrition, and health. In this paper, we examine the degree to which marine protected areas (MPAs), which aim to conserve marine biodiversity, are associated with improved nutritional outcomes in children under age 5. This analysis, which uses data from the 2008 Philippines Demographic and Health Survey and MPA data from the Coastal Conservation and Education Fund, found a positive association between MPAs and children’s dietary diversity when the MPAs were located closer than 2 km to a child’s community. MPA characteristics such as age or type of management were not consistently associated with dietary diversity. These results suggest a positive association of proximity to MPAs with certain aspects of children’s diet.     

THE IMPACT OF PEER PRESENCE ON CHEATING

Recent research has shown that the presence of peers can increase individual output both in the lab and the field. This paper tests for negative side effects of such peer settings. We investigate whether peer settings are particularly prone to cheating even if they do not provide additional monetary benefits of cheating. Participants in our real‐effort experiment had the opportunity to cheat when declaring their output levels. Although cheating did not have different monetary consequences when working alone than when working in the presence of a peer, we find that cheating is a more severe problem in peer settings.(JEL J20, J30, M50)     

A Field of Contention: Evidence from Housing Struggles in Bucharest and Budapest

The article offers a study of housing movements in Budapest and Bucharest, with the main focus on the developments since the financial crisis of 2008, stressing the role that both structural and contingent factors play in shaping the dynamics of this “field of contention.” It is argued that a structural view is enlightening for understanding the factors that form the interactive field between activists, such as differences in social positionality as well as ideological conflicts. Moreover, conceiving of a structurally produced field of contention can help explain the differences in housing contention in the two cities. The analysis situates housing movements and their allied, parallel, or opposing actors within the long-term processes of urbanization and global dynamics of commodification, including housing financialization. It demonstrates that to understand how structural and political factors interact in a complex field of contention, attention to processes beyond short-term local movements is necessary.     

The robustness of chain block designs and coat-of-mail designs

Chain block designs are relatively vulnerable to loss of information when missing values or outliers may occur. An alternative class of designs, coat-of-mail designs, are proposed and the relative robustness of the two types of design are compared.     

Ordinary Least Squares and Sample-Selection Models of Health-Care Demand Monte Carlo Comparison

This article examines alternative econometric models for health-care demand estimation. The analysis compares the Rand Health Insurance Study two-part model with sample-selection model estimators in a Monte Carlo simulation experiment designed to approximate individual-level health-care demand conditions. The underlying variable distributions are taken from cross- sectional data for a Swiss 1981 population survey. Three sets of error distribution assumptions are examined—bivariate normal, normal logistic, and Cauchy. Despite theoretical concerns with the two-part model, it outperforms the sample-selection model in terms of mean squared error of parameter estimate.     

Negotiating conflict within the constraints of social hierarchies in Korean American discourse

This paper provides an interactional account of conflict negotiation strategies in Korean American discourse. With specific attention to the sociolinguistic phenomenon of codeswitching among Korean Americans, I argue that speaking Korean at particular moments evokes ideologies of social hierarchy that serve to mitigate potential conflicts. The Korean social ideology of relative status has a major influence on how bilingual Korean Americans interact with one another, regardless of whether they are using Korean or English. The use of codeswitching, among other mitigating strategies in discourse, serves to instantiate these hierarchical relationships and introduces particular social norms that guide the observable actions used in navigating meaning and social relations. The data analyzed here show how the evocation of Korean social ideologies may serve as an identifiable characteristic of Korean American discourse.     

Shifting Concepts of Autonomy in the Hong Kong Hospital Authority

The Hong Kong Hospital Authority is the main provider of public health care services in Hong Kong. It operates 41 public hospitals, 74 general out-patient clinics and 45 specialist out-patient clinics. This article examines the reason for its establishment as a statutory body in 1990 and offers an assessment of its success in meeting the goals of the reformers. A belief that health care service delivery would be improved is largely supported by the evidence, but this may have more to do with budget and policy consistency than management autonomy and flexibility. Statutory independence, with its promise of improved efficiency, has its limits in the highly complex field of health where there are multiple players and where professional autonomy remains a key claim. In recent times, the authority has been subject to several reform attempts and, together with the SARS epidemic in 2003, these have had a significant impact on its organizational structure and practices, in particular, on its degrees of autonomy.

---

     

Common correlates of suicidal ideation and physical assault among male and female university students in Hong Kong

This study examined prevalence and correlates of suicidal ideation and dating partner violence in a cohort of 651 university students in social sciences classes at three universities in Hong Kong. A standard questionnaire was completed within one class period to examine the rates of occurrence of physical assault perpetration and suicidal ideation. Separate rates are presented for male and female perpetrators and for severe and overall levels of violence. The differences between subjects having suicidal ideation are compared using t tests. Logistic regression is used to predict the presence or absence of physical assault in the preceding year of reporting and suicidal ideation based on the variables such as Personal Relationship Profile, age, relationship length, and socioeconomic status. Results showed that 55% of suicidal persons had a history of violence, whereas 39% of violent people had a history of suicidal ideation. Logistic regression showed that physical assault shared a total of seven associated factors with suicidal ideation. Suicidal ideation seems to have no direct relation to physical and sexual assault, but they do share some common associated factors that are essential for the development of suicide prevention.