Simultaneous marginal survival estimators when doubly censored data is present

A doubly censoring scheme occurs when the lifetimes T being measured, from a well-known time origin, are exactly observed within a window [L, R] of observational time and are otherwise censored either from above (right-censored observations) or below (left-censored observations). Sample data consists on the pairs (U, δ) where U = min{R, max{T, L}} and δ indicates whether T is exactly observed (δ = 0), right-censored (δ = 1) or left-censored (δ = −1). We are interested in the estimation of the marginal behaviour of the three random variables T, L and R based on the observed pairs (U, δ). We propose new nonparametric simultaneous marginal estimators [^(S)]_T, [^(S)]_L{\hat S_{T}, \hat S_{L}} and [^(S)]_R{\hat S_{R}} for the survival functions of T, L and R, respectively, by means of an inverse-probability-of-censoring approach. The proposed estimators [^(S)]_T, [^(S)]_L{\hat S_{T}, \hat S_{L}} and [^(S)]_R{\hat S_{R}} are not computationally intensive, generalize the empirical survival estimator and reduce to the Kaplan-Meier estimator in the absence of left-censored data. Furthermore, [^(S)]_T{\hat S_{T}} is equivalent to a self-consistent estimator, is uniformly strongly consistent and asymptotically normal. The method is illustrated with data from a cohort of drug users recruited in a detoxification program in Badalona (Spain). For these data we estimate the survival function for the elapsed time from starting IV-drugs to AIDS diagnosis, as well as the potential follow-up time. A simulation study is discussed to assess the performance of the three survival estimators for moderate sample sizes and different censoring levels.     

生活与心灵:青年卢卡奇和文化问题

文章详细考察了卢卡奇早期理论创作,即其成为一名马克思主义者之前的理论创作,尤其是其对艺术、小说、戏剧等的研究。作者指出,卢卡奇在其从事理论活动的初始就把解决资本主义文化危机作为旨归;他转变为马克思主义者并非一种断裂,而是为这一理论旨归寻找现实载体的努力。     

Mechanisms of the Effect of Involuntary Retirement on Older Adults’ Self-Rated Health and Mental Health

This study examined mechanisms of the effect of involuntary retirement on self-rated health and mental health among adults aged 50 or older. Using two waves of the Health and Retirement Study (2006 and 2010), we selected a sample of 1,195 individuals working for pay at baseline who responded to a lifestyle questionnaire in both waves. Regression-based path analyses were conducted to test the mediating effects of financial control, positive and negative family relationships, and social integration on the relationship between involuntary retirement and self-rated health and mental health. Results of mediation analyses indicated that transition to involuntary retirement was directly negatively associated with subsequent self-rated health and indirectly negatively associated with mental health via perception of less financial control. Voluntary retirement was indirectly positively associated with both self-rated and mental health via perception of more financial control. No significant direct or indirect effects of retirement were found when retirement was measured with an aggregate measure without specifying its voluntariness. Findings emphasize the importance of specifying the voluntariness of retirement and recognizing the heterogeneity in the mechanisms of involuntary and voluntary retirement.     

Advancing towards inclusive social research: visual methods as opportunities for people with severe mental illness to participate in research

This article explores the possibilities offered by visual methods in the move towards inclusive research, reviewing some methodological implications of said research and reflecting on the potential of visual methods to meet these methodological requirements. A study into the impact of work on social inclusion and the social relationships of people suffering from severe mental illness (SMI) serves to illustrate the use of visual methods such as photo elicitation and graphic elicitation in the context of in-depth interviews with the aim of improving the aforementioned target group’s participation in research, participation understood as one of the basic elements of inclusive approaches. On the basis of this study, we reflect on the potential of visual methods to improve the inclusive approach to research and conclude that these methods are open and flexible in awarding participantsa voice, allowingpeople with SMI to express their needs, and therefore adding value to said approach.     

Changing the method of working with homeless people: a photovoice project in Italy

In Italy, many organizations are experimenting with the Housing First (HF) model to promote a change in how they work with homeless people. This change creates some difficulties, especially in promoting freedom of choice in people involved in the HF programs. This study explored the definition of “home” in homeless people’s points of view. The study participants were 5 homeless men involved in a HF program called “The Road Home” implemented in the city of Padua. Data were collected using Photovoice, a photographic method based on participatory action research. During the project, the participants took photographs to illustrate their definitions of “home” and then engaged in a critical dialogue about the images represented in the photographs. The results of the study showed that occupants identified the home as being related to family, friendship, cohabitation, and hope for the future. The Photovoice project provided an opportunity to promote discussions that revealed the true needs of the people involved, and in the meantime, it brought a change to the program and to the community, in addition to promoting the HF model in the community.     

How Far is Campania from the Best-Performing Region in Italy? A Territorial-Divide Analysis of Separate Waste Collection

Social Indicators Research - The aim of this paper is to investigate the divides in separate waste collection (SWC) between Campania and Veneto from a twofold perspective that considers both...     

The insertion of Roma in Sénart Project (2000–2007): a local minority-targeted affirmative action following in the footsteps of the French republican citizenship model

Between 2000 and 2007, 34 Romanian families living in shanty towns in a Parisian suburb participated in a local group-specific social integration project. A socio-anthropological study was undertaken 2 years after it ended, including documentary analysis of its archives, interviews with its beneficiaries and the professionals involved and ethnography among three families with distinct integration histories. Using the analysis of the project’s implementation and outcomes, this article sheds light on how exceptional acts of minority identity recognition – sporadic and on a case-by-case basis – were ultimately functional in the performance of a republican redistributive policy on individual access to rights and resources based on the denial of racialised inequalities.     

Developmental Changes in Infants’ Ability to Cope with Dialect Variation in Word Recognition

Toward the end of their first year of life, infants’ overly specified word representations are thought to give way to more abstract ones, which helps them to better cope with variation not relevant to word identity (e.g., voice and affect). This developmental change may help infants process the ambient language more efficiently, thus enabling rapid gains in vocabulary growth. One particular kind of variability that infants must accommodate is that of dialectal accent, because most children will encounter speakers from different regions and backgrounds. In this study, we explored developmental changes in infants’ ability to recognize words in continuous speech by familiarizing them with words spoken by a speaker of their own region (North Midland‐American English) or a different region (Southern Ontario Canadian English), and testing them with passages spoken by a speaker of the opposite dialectal accent. Our results demonstrate that 12‐ but not 9‐month‐olds readily recognize words in the face of dialectal variation.     

A Structural Equation Model Estimation of the Role of Social Vulnerability as a Predictor of People’s Feelings of Unsafety

Social Indicators Research - People’s perception of insecurity is linked to a wide range of factors and up-to-date sources stress the impact of socially constructed concerns on feelings of...     

Connecting Society and Policymakers? Conceptualizing and Measuring the Capacity of Civil Society Organizations to Act as Transmission Belts

Civil Society Organizations (CSOs) are considered important intermediaries between citizens and policymakers. They are assumed to function as transmission belts that filter societal preferences and channel them to policymakers. Although the ability of CSOs to connect civil society with policymakers has been put into question, it has rarely been theoretically specified and empirically tested. This paper develops a conceptualization of CSOs that examines their capacity to function as transmission belts. It does so by distinguishing two organizational dimensions related to member involvement and organizational capacity. The paper draws on a large survey of CSOs active at the EU to empirically assess these organizational dimensions and relate them to basic CSOs’ characteristics. The findings indicate that one out of three organizations approximates the ideal-type transmission belt. The findings contribute to a better understanding and assessment of CSO’s potential contribution to policy-making in representative democracies.