我国保险理论研究态势及其国际比较——基于学术期刊载文的分析

本文在剖析《保险研究》和JRI、RMIR、GRIR四份国内外保险学术期刊近五年来刊载的上千篇论文资料和引文资料的基础上,比较了中外保险理论研究的异同。作者结合保险特色,从研究内容(研究主题、研究险种),研究单位,文献、期刊和学科(影响保险理论研究的文献和期刊、影响保险理论研究的学科)等方面展开分析,结论主要以数据图表展现。本文希望引发有益我国保险理论研究的启示与思考。     

Health Care Reform,Efficiency of Health Insurers,and Optimal Health Insurance Markets

This research examines the efficiency of the U.S. health insurers. It shows that more insurers are less efficient than in the previous sample year; however, the results suggest that the federal health care reform has no significant effect on the overall efficiency of all insurers as a whole, which is very low but does not change much over time. This research explores how to improve the efficiency of the health insurance market by proposing state, regional, and national efficiency-based goal-oriented market models and an efficiency duplicating system, and it discusses important implications to the health care compacts, the health insurance exchanges or marketplaces, and the national multistate programs. It also analyzes further moves for efficiency enhancement with regard to payment methods and the health care delivery system. One interesting finding is that the Medicaid program is very efficient because it provides support to the offering of Medicaid coverage and further expansion, which enhances the health welfare of society with fewer resources inputs from the perspective of efficiency. This research should provide important insights for state and federal governments, policy makers, regulators, the health insurance industry, and consumers.     

医疗保险、健康异质性与精准脱贫——基于贫困脆弱性的分析

医疗保险能否有效减少贫困,尚未达成共识。本文利用CHARLS全国调查数据,基于资产度量个体的贫困脆弱性(即陷贫概率),实证分析医疗保险参保行为及其保障水平对贫困脆弱性的影响。研究表明,参与医疗保险和提高医疗保险保障水平的减贫效果都存在健康异质性,对健康状况差的群体有显著的减贫效果,而对健康状况好的群体减贫效果不显著。此外,本文证实了改善劳动供给是医疗保险减贫的重要中介渠道之一。     

The Role of Agents and Brokers in the Market for Health Insurance

Health insurance markets in the United States are characterized by imperfect information, complex products, and substantial search frictions. Insurance agents and brokers play a significant role in helping employers navigate these problems. However, little is known about the relations between the structure of the agent/broker market and access and affordability of insurance. This article aims to fill this gap by investigating the influence of agents/brokers on health insurance offering decisions of small firms, which are particularly vulnerable to problems of financing health insurance. Using a unique membership database from the National Association of Health Underwriters together with a nationally representative survey of employers, we find that small firms in more competitive agent/broker markets are more likely to offer health insurance and at lower premiums. Moreover, premiums are less dispersed in more competitive agent/broker markets.     

The Health Insurance Reform Debate

This article provides an overview of the U.S. health care reform debate and legislation, with a focus on health insurance. Following a synopsis of the main problems that confront U.S. health care and insurance, it outlines the health care reform bills in the U.S. House and Senate as of early December 2009, including the key provisions for expanding and regulating health insurance, and projections of the proposals' costs, funding, and impact on the number of people with insurance. The article then discusses (1) the potential effects of the mandate that individuals have health insurance in conjunction with proposed premium subsidies and health insurance underwriting and rating restrictions, (2) the proposed creation of a public health insurance plan and/or nonprofit cooperatives, and (3) provisions that would modify permissible grounds for health policy rescission and repeal the limited antitrust exemption for health and medical liability insurance. It concludes by contrasting the reform bills with market-oriented proposals and with brief perspective on future developments.     

Examining the Marginal Access Value of Private Health Insurance

According to a new theory advanced by Nyman (1999, 2003) , an important access motivation underlies the demand for health insurance. However, little empirical research has attempted to quantify and explain changes in the access value of health insurance. By assuming the demand for health insurance is derived from the demand for good health, this article shows mathematically that the marginal access value of private health insurance can be reasonably indexed by dividing the price of health insurance by a composite measure of medical prices. For the period from 1960 through 2002, national data for the United States suggests that the marginal access value of private health insurance has tended to increase over time. Based upon multiple regression analysis, marginal access value is shown to have increased over time in response to rising income, more generous benefit coverage, new medical technologies, and, in recent years, the backlash against health maintenance organizations (HMOs). In addition, expansions in the Medicaid program are shown to have slowed the growth of the marginal access value of private health insurance.     

补充医疗保险对居民消费的影响——来自城乡居民大病保险的证据

促进消费对我国稳定经济增长和构建新发展格局至关重要。本文基于中国家庭追踪调查数据(CFPS),利用地级市层面实施城乡居民大病保险的时间差异,运用双重差分法估计了大病医疗保险对居民消费的影响。结果表明,大病保险使家庭人均消费显著增长了约6%。使用了事件分析法、置换检验、改变回归样本和控制变量等一系列检验后,结论仍保持一致,且这一效果在期初住院率高、储蓄率高以及收入较高的家庭中更明显。进一步地,本文检验了大病保险对居民消费的三种可能影响渠道,发现降低家庭对未来医疗支出风险的预期是大病保险促进家庭非医疗消费进而影响家庭总消费的主要渠道,印证了我国居民对高额医疗支出的担忧是影响消费意愿的重要因素。本文研究对于完善多层次医疗保障体系和促进居民消费具有启示意义。     

提高医保基金管理效益的财务研究

社会医疗保险是一项巨大的民生工程,经过多年的运行,已经初步达到了预期目的,但尚有许多亟待完善的地方;同时在发展过程中又会面临许多新的问题和挑战,需要用新的举措予以应对,这些问题比较集中地体现在医保基金所涉各方的利益平衡、均衡医疗资源、医保基金城乡统筹、医保基金收支平衡和安全运行、弱势群体就医权益的保护等五个方面。为此,以财务视角的研究方法进行深度分析,从而找出相应的解决措施,推进医保基金管理更加科学化、效益最优化。     

社会医疗保险、自我保护与商业健康保险

基于消费者保险需求理论,采用中国家庭金融调查（CHFS）数据,分析了社会医疗保险、自我保护与商业健康保险之间的关系。结果表明：社会医疗保险抑制了商业健康保险的发展,显著减少了自我保护支出;自我保护促进了商业健康保险的发展。鉴于此,政府应制定合理的封顶线及报销比例以提供适度的基本医疗保险保障水平,商业保险公司应提供差异化的健康保险以补充社会医疗保险,政府及保险公司应鼓励自我保护投资以促进商业健康保险发展。     

Subsidization and Choice in the Group Health Insurance Market

This study investigates the effect of group health insurance plan choice on insurance unit price. The empirical findings suggest that the unit price of insurance, as measured by the ratio of the premium to expected indemnity benefits, is lower in group plans that offer employees a choice of different insurance options and require a premium contribution than it is in plans lacking at least one of these two features. The analyses suggest that lower unit prices are related to an increase in indemnity benefits and that the reduction in the unit price is greater for lower risks. The findings indicate that although subsidization of high risks by low risks occurs with group health insurance, the degree of subsidization is less when employees are offered a choice of health insurance plans.     

Health insurance and its impact on the survival rates of breast cancer patients in Synthea

The goal of this project was to build policy modules in a synthetic health system to analyze how healthcare policy impacts breast cancer survival rates. To do any inference regarding healthcare policy, researchers need secure and protected health data, which are restricted by privacy laws and interoperability issues. Synthetic health systems generate and help investigate health data without concerns of violating legal restrictions (HIPAA). In this research, we programmed health insurance and loss‐of‐care modules into a synthetic health system simulator (Synthea) to simulate and analyze the impact of health insurance on breast cancer survival rates. Our goal was for our health insurance and loss‐of‐care implementations to be realistic and reflective of the real world, in which we were successful.     

重大公共卫生危机下的健康保险应对研究

公共卫生危机对经济的影响较大,21世纪以来,面对频发的重大公共卫生危机,健康保险业如何通过科技赋能,有效参与到公共卫生安全体系建设中亟待研究对策。通过数据比较分析法、模型构建法,分析了我国商业健康保险业在防控重大疫情期间的作为、短板、机遇和挑战,并基于健康保险参与公共卫生安全体系建设的国际经验和保险科技的发展,提出了我国健康保险业应对重大公共卫生危机的一系列政策建议,以便完善现有公共卫生安全体系,助推"健康中国战略"和"可持续发展战略"的实现。     

Medical Insurance Coverage and Health Production Efficiency

Conventional economic theory predicts that medical insurance coverage causes an inefficient production of health because of  ex ante  and  ex post  moral hazard effects. However, no research has empirically examined the magnitude of the inefficiency. This study empirically examines the impact of medical insurance on the technical efficiency of health production at the metropolitan level. The underlying health production function allows for preventive care, curative care, and behavioral factors. Data envelopment analysis determines relative technical efficiency. The multiple regression results indicate that insurance coverage generates inefficiency but the efficiency loss appears to be relatively small on the extensive margin.     

试析医疗卫生事业发展的特殊矛盾和我国医改的路径选择

市场经济条件下医疗卫生事业发展面临五大特殊矛盾。现行医疗卫生体制要解决的首要问题是体制、机制创新问题。公立医院改革和医疗保险体制改革相结合,建立以公益性医院为主题的医疗保险职能和公共医疗服务职能相结合的制度统一、全民覆盖、统筹城乡的新型公共医疗服务保险制度,构建政事分开、管办分开、医保基金管用分开的医疗卫生管理体制,是化解现行医药卫生体制蕴藏的内在矛盾,破解我国医改难题的可行的路径选择。     

Out-of-Pocket Health Expenditures: A Suggested Role for Social Security

We present economic data to demonstrate that the (random) out-of-pocket health-related expenses of seniors who face medical problems are significant and increasing over time. This remains the case even when we take into account the availability of supplemental health insurance. We propose to apply a modest part of Social Security benefits, without increasing the total expenses of this system, to provide mandatory supplemental health insurance for all recipients. Using a theoretical framework we demonstrate that introducing such additional role for Social Security makes individuals (ex ante) better off and hence results in a Pareto dominating new regime for Social Security.     

The Determinants of Financial Health of Asian Insurance Companies

Previous studies of financial health of insurance companies are mainly focused on insurers operating in the United States and developed economies. This article focuses on the solvency of general (property‐liability) and life insurance companies in Asia using firm data and macro data separately. It uses different classification methods to classify the financial status of both general and life insurance companies. With the exception of Japan, failures of insurers in Singapore, Malaysia, and Taiwan are nonexistent. We find that, first, the factors that significantly affect general insurers' financial health in Asian economies are firm size, investment performance, liquidity ratio, surplus growth, combined ratio, and operating margin. Second, the factors that significantly affect life insurers' financial health are firm size, change in asset mix, investment performance, and change in product mix, but the last three factors are more applicable to Japan. Third, the financial health of insurance companies in Singapore seems to be significantly weakened by the Asian Financial Crisis. As the insurance industry in different Asian economies is at different stages of development, they require different regulatory guidelines.     

Transdisciplinarity in land use science – A review of concepts,empirical findings and current practices

In the search for solutions to complex real-world problems, the benefits of transdisciplinary research (TDR) have been widely heralded. Land use science appears to be a designated field for TDR. However, to date, the additional expenses of TDR are accompanied by a so far not proved added value, and empirical findings are claimed to be scarce and dispersed over several disciplines and case studies.We reviewed 299 articles obtained from a structured literature search to (1) investigate the current differences between theory and practice, (2) identify empirical findings, and (3) ascertain the contributions of TDR to promoting sustainable land use management.Our results demonstrate that, in spite of an increasing conceptual consistency in the theoretical discussion of TDR, the implementation of TDR remains a substantial challenge, in part because of the gap between theory and practice. In addition, research on TDR is science and process centred. The benefits of TDR in addressing real-world problems within the field of land use remain unproven.     

健康保险单独监管问题研究

商业健康保险最能体现保险的社会管理功能,在我国多层次医疗保障体系建设中发挥着愈加明显的重要作用。本文从促进健康保险发展的行业监管角度,提出应将商业健康保险作为与产险、寿险并列的第三领域实施单独监管。本文详细分析了健康保险的专业经营特点,阐述了对健康保险实施单独监管的必要性,明确了单独监管的基本内容并提出了相关政策建议。     

The Effects of Uncertainty on the Demand for Health Insurance

This article analyzes the effects of uncertainty and increases in risk aversion on the demand for health insurance using a theoretical model that highlights the interdependence between insurance and health care demand decisions. Two types of uncertainty faced by the individuals are examined. The first one is the uncertainty in the consumer's pretreatment health and the second is the uncertainty surrounding the productivity of health care. Comparative statics results are reported indicating the impact on the demand for insurance of shifts in the distributions of pretreatment health and productivity of health care in the form of first‐order stochastic dominance, Rothschild–Stiglitz mean‐preserving spreads, and second‐order stochastic dominance. The demand for insurance increases in response to a Rothschild–Stiglitz increase in risk in the distribution of the pretreatment health provided that the health production function is in a special class and the price elasticity of health care is nondecreasing in the pretreatment health. Provided also that the demand for health care is own‐price inelastic, the same conclusion is obtained when the uncertainty is about the productivity of health care.     

A continuous model of income insurance

In this paper we treat an individual’s health as a continuous variable, in contrast to the traditional literature on income insurance, where it is assumed that the individual is either able or unable to work. A continuous treatment of an individual’s health sheds new light on the role of income insurance and makes it possible to capture a number of real-world phenomena that are not easily captured in the traditional, dichotomous models. In particular, we show that moral hazard is not necessarily outright fraud, but a gradual adjustment of the willingness to work, depending on preferences and the conditions stated in the insurance contract. Further, the model can easily encompass phenomena such as administrative rejection of claims, and it clarifies the conditions for the desirability of insurance in the first place.