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排序方式： 共有472条查询结果，搜索用时 15 毫秒
11.
Cohen Jeffrey P. LaCour-Little Michael 《The Journal of Real Estate Finance and Economics》2020,60(1-2):1-2
The Journal of Real Estate Finance and Economics - 相似文献
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Turan G. Bali K. Ozgur Demirtas Haim Levy Avner Wolf 《Journal of Monetary Economics》2009,56(6):817-830
It has become increasingly popular to advise investors to relocate their funds from a primarily stock portfolio to a primarily bond portfolio as they get older. However, the well-known decision rules such as mean–variance or stochastic dominance rules are unable to explain this common practice. Almost stochastic dominance (ASD) and almost mean–variance (AMV) approaches are used to examine the dominance of stock and bond portfolios. ASD and AMV rules unambiguously support the popular practice of advising higher stock to bond ratio for long investment horizons. Hence, we provide an explanation to the practitioners’ recommendation within the expected utility paradigm. 相似文献
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Vicki Laskier Holly Guy Mark Fisher W. Richey Neuman Iwona Bucior Alexander T. Cohen 《Journal of medical economics》2013,16(10):1063-1072
AbstractAims: To determine the clinical effectiveness and safety of venous thromboembolism (VTE) prophylaxis using US- and Europe-approved anticoagulants relative to extended-duration VTE prophylaxis with betrixaban. Low molecular weight heparins (LMWHs), unfractionated heparin (UFH), fondaparinux sodium and placebo were each compared to betrixaban, as standard-duration VTE prophylaxis for hospitalized, non-surgical patients with acute medical illness at risk of VTE.Materials and methods: A systematic literature review was conducted up to June 2019 to identify randomized controlled trials (RCTs) of VTE prophylaxis in hospitalized, non-surgical patients with acute medical illness at risk of VTE. Studies that reported the occurrence of VTE events (including death) and, where possible, major bleeding, from treatment initiation to 20–50?days thereafter were retrieved and extracted. A Bayesian fixed effect network meta-analysis was used to estimate efficacy and safety of betrixaban compared with standard-duration VTE prophylaxis.Results: Seven RCTs were analyzed which compared betrixaban, LMWHs, UFH, fondaparinux sodium, or placebo. There were significantly higher odds (median odds [95% credible interval]) of VTE with LMWHs (1.38 [1.12–1.70]), UFH (1.60 [1.05–2.46]), and placebo (2.37 [1.55–3.66]) compared with betrixaban. There were significantly higher odds of VTE-related death with placebo (7.76 [2.14–34.40]) compared with betrixaban. No significant differences were observed for the odds of major bleeding with all comparators, VTE-related death with any active standard-duration VTE prophylaxis, or of VTE with fondaparinux sodium, compared with betrixaban.Limitations and conclusions: In this indirect comparison, betrixaban was shown to be an effective regimen with relative benefits compared with LMWHs and UFH. This indicates that betrixaban could reduce the burden of VTE in at-risk hospitalized patients with acute medical illness who need extended prophylaxis, though without direct comparative evidence, stronger conclusions cannot be drawn. 相似文献
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Malcolm Abbott Bruce Cohen 《Economic Papers: A journal of applied economics and policy》2010,29(1):48-63
This paper analyses the diverse range of industry structures operating in the water and wastewater sectors of Australia’s major state capital cities. In particular, it examines this structural diversity in the light of the research findings to date on water and wastewater industry structures, efficiency and productivity, and outlines the range of additional factors that have militated against greater consensus on structural reform in the water and wastewater sectors in major urban areas of Australia. The paper concludes by considering the merits of striving for greater consistency in industry structure given the highly localised nature of urban water supply systems, and by outlining potential areas of future research including the scope for and nature of urban water markets, the optimal separation of regulatory and commercial activities and the potential for private sector participation in the provision of water and wastewater services. 相似文献
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