Measurement error is well known to cause bias in estimated regression coefficients and a loss of power for detecting associations. Methods commonly used to correct for bias often require auxiliary data. We develop a solution for investigating associations between the change in an imprecisely measured outcome and precisely measured predictors, adjusting for the baseline value of the outcome when auxiliary data are not available. We require the specification of ranges for the reliability or the measurement error variance. The solution allows one to investigate the associations for change and to assess the impact of the measurement error. 相似文献
Contemporary processes of individualization push people to construct single‐handedly their own identities. This urge runs counter to a fundament of sociology, which proposes that identities are social products that must be validated through social relations. Based on participant observation and in‐depth interviews with life coaches and their clients, I investigate life coaching as a social institution that aims to resolve the paradoxical nature of the desire for self‐creation. Locating life coaching in the larger identity‐fashioning market, this article illustrates how the artificial nature of outsourced social relations reconciles two apparently contradictory desires: the “need for help” and “wanting to find it on my own.” Three mechanisms are involved: creating an independent social space where identities can be crafted away from significant others; deliberately deemphasizing the coach and intentionally underwriting personal authorship; and encouraging clients to root identities in the social world while promoting an instrumental view of sociality. The article discusses the blurring of boundaries between intimate social relations and utilitarian market logic, and the implications of the ongoing outsourcing of identity support that reinforces the privileged ideal of self‐made identities. 相似文献
Abstract. On the basis of the brief review of developments in employment and wages in Poland during the stabilization program in 1990, this paper tries to provide critical comments on the two often expressed opinions: that the fall in employment was surprisingly small compared to the fall in output, and that the tax-based incomes policy played a major role in forcing a huge drop in real earnings. It is argued that the actual proportions of the fall in output and employment were in line with specific features of the “overheated” shortage economy, which existed prior to the stabilization program. Since wages were not a “nominal anchor” for most of 1990, other reasons for the astonishing downward flexibility of real wages are analyzed. It is suggested that during the labour market adjustment, the rational strategy of employees was to accept a large, real wage cut in exchange for keeping their employment. Contrary to widespread opinion, it might also be argued that incomes policy, in a short and medium run, will play a much more important role in containing wage pressure than it has until now. 相似文献
Symbolic interactionism is defined as the study of social acts and social objects. Paintings are social objects whose value is almost entirely created in the social acts called art worlds. Important art worlds are currently organized as art markets, in which art is created, exhibited, bought, sold and discussed by artists, museums, dealers, collectors, and critics. In St. Louis, where fieldwork was done, the art market is marginal; art schools and faculty artists replace dealers, collectors, museums, galleries, and critics in the local production of art, the creation of art value, and the determination of artistic status. 相似文献
Introduction: In 2005, the International Committee of Medical Journal Editors (ICMJE) proposed that all submitted trials in all 11 member journals must be prospectively registered in order to be considered for publication. Registering drug trials was meant to reduce the likelihood of selective reporting. The aim was to determine the proportion of antipsychotic and antidepressant trials that were registered.
Methods: We searched in Pubmed for all randomized controlled trials of any antidepressant or antipsychotic published between July and December 2014. The primary objective was to determine the proportion of trials that were registered. Secondary objectives included comparing the reporting of methodological details and positive study findings between registered and unregistered trials.
Results: Of the 67 studies identified, 58% were registered. 75% of the antipsychotic trials and 51% of the antidepressant trials were registered, respectively. Registered trials were more likely to report important methodological details associated with risk of bias in RCTs. There was no significant difference in trials reporting positive outcomes for the study intervention between registered and unregistered trials.
Conclusion: Approximately 60% of published antidepressant and antipsychotic drug trials during July to December 2014 were registered. Unregistered trials were less likely to report important methodological details. 相似文献
This article examines the phenomenon of Israeli civil society organizations (CSOs) providing services to women as part of the creation of an alternative women's welfare sphere in Israel in recent years, and its influence upon the welfare state and women. The creation and the existence of the women's civil society sphere can be seen as part of a move by the Israeli welfare state towards a liberal‐style economic regime. The article examines the services and mode of operation of fourteen organizations offering welfare, health and educational services to women in Israel, using a qualitative research method. The study identifies four traits characterizing these organizations: their loose connections with the welfare state, the use of sectoral and selective criteria determining eligibility for their services, the mirroring of internal dynamics of the community and its response to gender issues, and the CSOs' holistic, sporadic and unprofessional services. The analysis highlights the gender dimensions of civil society organizations, the characteristics of structure and content of the services they offer, and the role and place of civil society organizations operating parallel to the welfare state. It sheds light on the complex nature of this sphere and its services, which contribute to the empowerment and improvement of women's lives but, simultaneously, strengthen and reinforce their exclusion and marginalization. 相似文献
A method for nonparametric estimation of density based on a randomly censored sample is presented. The density is expressed as a linear combination of cubic M -splines, and the coefficients are determined by pseudo-maximum-likelihood estimation (likelihood is maximized conditionally on data-dependent knots). By using regression splines (small number of knots) it is possible to reduce the estimation problem to a space of low dimension while preserving flexibility, thus striking a compromise between parametric approaches and ordinary nonparametric approaches based on spline smoothing. The number of knots is determined by the minimum AIC. Examples of simulated and real data are presented. Asymptotic theory and the bootstrap indicate that the precision and the accuracy of the estimates are satisfactory. 相似文献
Kibbutz communities and organizations were originally structured to be egalitarian and democratic. The last two decades proved to be a major challenge for their sustainability due to a serious economic crisis. Many scholars have lamented the end of the kibbutz, some of them claiming that there is no place for utopias in the twenty-first century. Kibbutz communities were trying to survive within a turbulent economic and social environment. This article will attempt to analyse varieties in developing sustainability that were adopted by kibbutz communities. Focusing on the impact of the economic crisis, we will investigate processes of value change within the kibbutz, taking into consideration that the kibbutz does not exist in a vacuum but is rather embedded within a society that has undergone transformation processes from a socialistic to a capitalistic orientation. The article will look at different solutions that kibbutz communities have adopted and strategies that kibbutz members used in order to cope with this crisis. We will explain how these solutions and strategies are reflected in members' values and attitudes as well as taking into consideration in which areas value change was fast and in which it was slower. Our analysis will lead to a reflection on the different communitarian and non-communitarian models that might evolve in the kibbutz communities and their possible outcome. The discussion will focus on three dimensions of sustainability methods adopted by kibbutz communities that integrate value change, organizational change, and community processes. 相似文献