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Voisin CE de la Varre C Whitener L Gartlehner G 《Health information and libraries journal》2008,25(3):198-207
BACKGROUND: Because of the expense of updating practice guidelines, recent attention has focused on approaches that can reliably assess any updating required. Shekelle et al. (Journal of the American Medical Association 2001, 286, 1461-7) proposed using limited literature searches with expert involvement to reduce resources used in assessing whether a guideline needs updating. OBJECTIVES: This study compared Shekelle's method and the traditional systematic review method regarding comprehensiveness and effort. METHODS: Two research teams translated critical key questions on screening test treatments and outcomes to Medical Subjects Headings (MeSH) and search strategies. They refined Shekelle's method over three iterations, seeking greater efficiency. Using both methods independently, teams assessed the need to update six topics from the 1996 Guide to Clinical Preventive Services (US Preventive Services Task Force). Outcomes included completeness of study identification, importance of missed studies and effort involved. RESULTS: The revised review approach produced fewer citations than the traditional approach and saved time, identifying fewer eligible studies than the traditional approach. None of the studies missed was rated important by the experts consulted. CONCLUSIONS: The revised review approach provides an acceptable method for judging whether a guideline requires updating. Librarians were an integral part of the research process that streamlined the searches. 相似文献
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A growing body of research documents that various forms of violence exposures are interrelated. This paper presents a conceptual model, which accounts for the relationship between youth witnessing intimate partner violence (IPV) at home and their subsequent engagement in bullying behaviors and victimization by peers. A comprehensive search of major databases was conducted within a 12-year period (1999–2011). Based on this review, we provide empirical evidence, which documents that youth who witness IPV are at increased risk for bullying behaviors and peer victimization. Next, we posit a mediational model, which suggests that the relationship between witnessing IPV and bullying behavior and peer victimization is mediated by psychological problem behaviors, lower school success, and problematic peer interactions. We also explore potential moderating factors that may exacerbate or buffer the effects of witnessing IPV, such as age, gender, race/ethnicity, parenting practices, and peer relationships. This overall conceptual model should be empirically tested and has important implications for guiding future research on the relationship between IPV and bullying behaviors and victimization among youth. 相似文献
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在大规模定制生产的基础上,对大规模定制供应链柔性的进行研究.在提出和界定柔性系数这一概念和影响它的六个主要因子的基础上,利用灰关联方法科学的计算出影响大规模供应链柔性关键因子,并以某家电企业实际数据为例进行实证分析. 相似文献
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高校是我国IC产业链中不可缺少的一部分,针对当前集成电路领域企业缺少原始技术积累、高校成果转化困难的问题,提出一种以IP核合作方式促进高校集成电路设计加快发展、实现高校与企业双赢的创新机制.以西安交通大学SoC设计中心近十年来的发展历程为案例进行分析,提出基于IP核开发的高校集成电路设计发展的具体策略. 相似文献
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