谷歌盈利能否持续增长？

业绩有所恢复，但仍不尽如人意，至少对谷歌公司而言是不够的.     

美国医疗决策中的卫生技术评估

卫生技术评估（Health technology assessment，HTA）是对卫生保健技术应用所产生的短期与长期结果进行检验的一种政策研究形式。评估的内容包括安全性、有效性、患者自报结果、现实效果、成本和成本一效果以及社会、法律、伦理和政治影响等。     

如何塑造成功的产品？

为什么有的公司能够依靠其新产品不断取得成功，而其他明显具有卓越能力的巨头公司却只能在原地踏步，无望走向成功之路？     

Underwriting the elderly: the utility of DWR, part II

Cognitive function is an important predictor of mortality in the elderly. Over the past few years, an increasing number of life insurance companies have incorporated screening for cognitive impairment into the underwriting process at older ages. Many different test instruments provide a measurement of cognitive function. Among these, the 10 word delayed word recall test (DWR) offers the best opportunity to study mortality directly, because of a long history of use in long-term care risk assessment. This article revises and extends a previous report published in the Journal in 2006 looking at the relationship between DWR score and mortality.     

Medicare retiree drug subsidy compliance considerations

Employers and plan sponsors have struggled with many issues associated with Medicare's retiree drug subsidy program. Recent reviews of employer methods for collecting the subsidy from the Centers for Medicare and Medicaid Services (CMS) identified significant gaps that would affect the subsidy payment and create issues in case of an audit. In fact, the Department of Health and Human Services Office of Inspector General (OIG) has placed audits of employer retiree drug subsidy processes in its work plans for 2006 and 2007. This article discusses areas that employers must address now to avoid significant long-term financial and compliance problems in the future.     

"Quicker and sicker" under Medicare's prospective payment system for hospitals: new evidence on an old issue from a national longitudinal survey

Medicare's prospective payment system for hospitals (PPS), introduced in the USA in 1983, replaced cost reimbursement with a system of fixed rates which created incentives for hospitals to control costs. Previous studies found that elderly patients were discharged from hospital "quicker and sicker" under PPS and concluded that families were coping at home. We analyse a national longitudinal survey, the first National Health and Nutrition Examination Survey and its Epidemiologic Followup Study, which includes data on more outcomes over a longer period than earlier studies. We find that the rate of admission to nursing homes from the community in the first weeks after a hospital discharge more than tripled under PPS, suggesting that families were not always able to cope. As another response to sicker patients, discharges directly to nursing homes from hospitals, which jumped initially under PPS, may have risen further when payment rates were tightened in the early 1990s. Hospital readmissions fell after the first few years. Our findings are strengthened by the fact that we control for patients' health using health information collected independently of hospital admission.     

私有化更有效率吗

本文对始自里根和撒切尔夫人主政时期的私有化浪潮提出了批评和质疑。本文认为,以解决政府失灵问题的私有化浪潮,可能导致更为严重的市场失灵问题。虽然在总体上私有企业比国有企业有更强的盈利能力,但这并不意味着私有企业比国有企业更有效率。即使能够证明私有企业比国有企业更有效率,也不能说私有化是可取的。     

凯恩斯主义之后的宏观经济学

文章首先回顾了凯恩斯主义理论所借助的计量经济学框架,该理论藉此从互不相连的定性讨论进化为一个能够系统地运用数据作估计的方程组,并在需要量化货币和财政政策时提供可操作的指导建议。接着,文章对导致这一框架在20世纪70年代失败的主要原因进行了讨论。文章指出,现代宏观经济模型在政策指导上毫无价值,而沿着现在的思路所进行的任何修正也都无法改变这种情况。这一判断提出了一个有用的经济周期理论所必须具备的某些原则。