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排序方式: 共有248条查询结果,搜索用时 15 毫秒
1.
Donald B. Rubin 《Scandinavian Journal of Statistics》2004,31(2):161-170
Abstract. The use of the concept of ‘direct’ versus ‘indirect’ causal effects is common, not only in statistics but also in many areas of social and economic sciences. The related terms of ‘biomarkers’ and ‘surrogates’ are common in pharmacological and biomedical sciences. Sometimes this concept is represented by graphical displays of various kinds. The view here is that there is a great deal of imprecise discussion surrounding this topic and, moreover, that the most straightforward way to clarify the situation is by using potential outcomes to define causal effects. In particular, I suggest that the use of principal stratification is key to understanding the meaning of direct and indirect causal effects. A current study of anthrax vaccine will be used to illustrate ideas. 相似文献
2.
Using 1994 National Long Term Care Survey data, we estimated logistic regressions of formal and informal home health care use and hours. Home health care use and intensity were differentially impacted by chronic conditions, are higher for Medicaid enrollees and rural or small town residents, but lower for HMO enrollees. Decreases in the probability of home health care use increased informal instrumental activities of daily living (IADL) support four hours and decreased informal activities of daily living (ADL) support eight hours weekly. IADL caregiving substituted for formal care, but ADL caregiving declined with reductions in formal care. Public policy reducing formal home health care access may reduce informal ADL caregiving and increase informal IADL caregiving, producing net declines in support. 相似文献
3.
Rubin I 《Physician executive》1996,22(10):22-27
All CQI/TQM efforts share a common purpose: to learn something that can correct past mistakes and/or to create better futures. Because learning is a dynamic circular process, the information about a problem or an opportunity will be limited unless four perceptions of the truth--each valid, and each incomplete--are accepted. These four types of learning styles or ways of perceiving are: abstract conceptualizers, active experimenters, concrete experiencers, and reflective observers. Unless all the stages of the learning process have been fully completed, unless all the strokes work in harmony, we cannot be confident that a CQI effort has added its full value. A CQI team's interpersonal process, the tools by which individually limited truths are forged into a consensual holistic truth, must ensure that the group's effort goes "around in circles." 相似文献
4.
Eschmann Rob Gryder Ryan W. Connaught Gerri Zhao Xiang Jeon Sae-Mi Gonzales Ernest 《Clinical Social Work Journal》2022,50(3):242-255
Clinical Social Work Journal - Experiences with more subtle racism – which have been called microaggressions – have a host of negative effects on health, mental health, educational... 相似文献
5.
In China, family care is the dominant form of care for people with mental disorders. Since 2004, the government has been developing a community‐care model that places more responsibility on community organisations and the local governments at the provincial, municipal and county levels for the provision of formal care. As a large number of people with severe mental disorders live in rural China, this case study was conducted in a rural county in order to examine the development of community care. It was found that, although family care remains dominant, families’ need for formal care is increasing. Community services have improved, but their development is constrained by several contextual and micro factors. In this study, it is argued that the community‐care model introduces a process of reconfiguration of the relative responsibility for care among the family, social organisations and the government, but progress depends on further administrative and fiscal reforms. 相似文献
6.
Gary Douglas Rubin 《Business and Society Review》2015,120(4):519-548
This work concerns itself with the debate taking place in the United States about the duty of care financial advisers owe investors. On one side it is argued that advisers need only concern themselves with recommendations which meet certain suitability standards. On the other side, there are those who argue the suitability standard is not strong enough to adequately protect investor interests. Instead of ensuring investment recommendations are merely suitable, financial advisers owe their investors a fiduciary duty to “act in the best interest of the customer without regard to the financial or other interests … of the investment adviser providing the advice.” (SEC, 2011). In applying a properly understood conception of what fiduciary means I argue that regulations should not be harmonized but that fiduciary duty should apply to all who provide personalized investment advice to retail customers. I will further argue that even if the regulations are harmonized as proposed, because of exemptions for broker‐dealers as envisioned in the proposal, and which currently apply to Registered Investment Advisers, the efficacy of fiduciary duty is diluted to the point of rendering its current application, much less its potential uniform imposition, irrelevant. 相似文献
7.
Michael Mackert Kathleen Case Allison Lazard Jeeyun Oh Jessica Hughes Wagner Ernest Hawk 《Journal of American college health : J of ACH》2019,67(4):291-298
Objective: Despite declining cigarette smoking rates in the US, there is a continued need for tobacco prevention education campaigns to reach young adults. Recognizing the need for improved tobacco control messaging, the University of Texas (UT) System engaged The University of Texas at Austin Center for Health Communication to develop a brand and message that would strengthen tobacco control efforts at its 14 institutions. Methods: This article describes the iterative process involved in creating a brand for tobacco control, including an environmental scan, identifying potential message themes, and creating and refining logos. Results: This article highlights the process of developing a system-wide tobacco control brand. Specifically, the process included coordinating an interdisciplinary team with content and design experts, and presenting ideas to stakeholders for serial feedback and refinement, among others. Conclusions: Ultimately, this project offers a model for other systems of higher education interested in pursuing similar initiatives. 相似文献
8.
The application of optimization techniques in digital simulation experiments is frequently complicated by the presence of large experimental error variances. Two of the more widely accepted design strategies for the resolution of this problem include the assignment of common pseudorandom number streams and the assignment of antithetic pseudorandom number streams to the experimental points. When considered separately, however, each of these variance-reduction procedures has rather restrictive limitations. This paper examines the simultaneous use of these two techniques as a variance-reduction strategy in response surface methodology (RSM) analysis of simulation models. A simulation of an inventory system is used to illustrate the application and benefits of this assignment procedure, as well as the basic components of an RSM analysis. 相似文献
9.
空间理论视域下农民工“城市不融入”探究 总被引:1,自引:2,他引:1
吴如彬 《重庆邮电大学学报(社会科学版)》2014,26(6):117-121
现阶段,农民工作为城市化的建设者和贡献者,遭遇到无法融入城市的不公平境遇。20世纪70年代以来兴起的空间理论为解释农民工“城市不融入”问题提供了一个有力视角。基于空间理论分析,造成农民工“城市不融入”的主要原因是:制度空间设计下的户籍制度具有双重逻辑:既带来“城”和“乡”空间对立,又形成“农民”和“市民”身份排斥;地域空间中,住房的缺失与“城中村”形成,“寄生空间”与“城市空间”对立;认同空间中,“市民”的空间排斥和“农民工”的自我怀疑无法达成心理共识。要解决农民工“城市不融入”,应在制度空间、地域空间以及认同空间的基础上构建空间融入。 相似文献
10.
This study analyzes the image repair discourse by Chinese Health Minister Zhang Wenkang's discourse on SARS. The minister faced several accusations: the SARS outbreak was growing, the Chinese government had covered up the severity of this problem, the Chinese government ignored Taiwanese who suffered from SARS, and the Health Ministry provided information that was neither timely nor accurate. He employed several image repair strategies (denial, defeasibility, bolstering, minimization, differentiation, attack accuser, and corrective action). However, his messages were contradictory and apparently related on false information, so his efforts were unsuccessful and he was stripped of his office. 相似文献