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Karina Nielsen Hanne Fredslund Karl B. Christensen Karen Albertsen 《Work and stress》2006,20(3):272-287
While many studies of interventions have focused on their content and immediate effects, less research has focused on the processes that may explain these effects. The purpose of this study was to show how process evaluation can be used to interpret the results of an intervention study in four industrial canteens in Denmark. Two canteens acted as intervention groups and two as comparison groups. Effects were measured by surveys before and after interventions, and observations and interviews were conducted to provide an in-depth understanding of processes. Analyses were conducted based on the responses from 118 employees. Results showed, contrary to expectations, improvements in working conditions and well-being in one intervention group and in one comparison group, whereas no improvements were found in the two remaining groups. Data from the process evaluation enabled a meaningful interpretation of these results, raising the possibility programme failure rather than theory failure, and thereby constituting an example of how process evaluation can shed light over the factors that may influence outcomes in controlled intervention studies. 相似文献
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Susan T. Ennett Karl E. Bauman Andrea Hussong Robert Faris Vangie A. Foshee Li Cai Robert H. DuRant 《Journal of research on adolescence》2006,16(2):159-186
To examine the peer context of adolescent substance use, social network analysis was used to measure three domains of attributes of peer networks: social embeddedness, social status, and social proximity to substance users. The sample was a panel of 5,104 sixth, seventh, and eighth graders in three public school systems surveyed every 6 months for five assessments. Hierarchical generalized linear models showed that adolescents less embedded in the network, with greater status, and with closer social proximity to peer substance users were more likely to use substances. Also, adolescents in less dense networks and networks with higher smoking prevalence were more likely to smoke and use marijuana. Results establish the utility of social network analysis for measuring peer context and indicate that conventionality of relationships—having friends in the network, being liked but not too well liked, and having fewer friends who use substances—is most beneficial. 相似文献
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Karl Atkin 《Disability & Society》1991,6(1):37-47
The idea of incorporating a user perspective was central to the design of a study looking at services for, and the needs of, Black minorities. The initial assumption of this work was that health, illness and disability are intimately connected to the way people construct their social realities. The ideas and attitudes individuals hold about their health and disability, however, are also organised within a particular discourse. This discourse is not neutral, and a critical understanding that unravels it is necessary. This is the intent of the article, which includes an exploration of the construction of health, illness and disability in western societies and how this is subsequently discussed in relation to Black minorities. At a general level this is addressed with reference to the humanist philosophy which pervades the entire discourse and provides the dominant framework of power in society. 相似文献
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This paper draws on D. J. Bartholomew's recent work on the factor analysis of categoric data, especially as it pertains to the scaling of social life feelings such as self-determination, trust, satisfaction. The logit-probit model and the probitprobit model were fitted to five items on trust in order to display their characteristics and to consider their utility. The Rasch model was fitted to the same data set in order to show its relation to the aforesaid Bartholomew factor models. Although recent work has put scaling by means of categoric responses on a surer statistical basis, it still leaves a variety of questions unanswered. Foremost among these is the question of whether latent variables are fact or fiction. 相似文献
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Karl Mosler 《Allgemeines Statistisches Archiv》2004,88(2):133-135