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Will Women Lead the Way? Gender and Information Preferences in Investment Decisions 女性会引领潮流吗?投资决策中的性别和信息偏好
Pub Date : 2009-02-12 DOI: 10.2139/ssrn.1341897
Leda E. Nath, Lori L. Holder-Webb, David Wood
Decisions on whether to invest or not in an organization may involve a wide variety of information, from financial reports, to assumptions about industry sectors, to evaluations of the quality of corporate management. Prior research demonstrates that investors may rely heavily upon non-financial information provided by a company. We examine the demand for Corporate Social Responsibility information and the demand for informational materials that are easier to read and quicker to assimilate and conclude that females differ significantly from males in their demand for both of these items. Integration of these findings with extant research addressing the supply of information suggests that female's information needs are not attended to the same degree as the information needs of males. The economic power and independence of females is increasing, while time poverty and related resource constraints remain strong; the potential for marginalization of this investing group may represent a cause for concern among regulatory bodies tasked with maintaining a level playing field in the capital markets.
是否对一个组织进行投资的决定可能涉及各种各样的信息,从财务报告到对行业部门的假设,再到对公司管理质量的评估。先前的研究表明,投资者可能严重依赖公司提供的非财务信息。我们研究了对企业社会责任信息的需求和对更容易阅读和更快吸收的信息材料的需求,并得出结论,女性对这两个项目的需求与男性有显著差异。将这些发现与现有的关于信息供应的研究结合起来,表明女性的信息需求没有像男性的信息需求那样得到同等程度的重视。妇女的经济实力和独立性正在增强,而时间贫穷和相关的资源限制仍然很强;这一投资群体被边缘化的可能性,可能会引起负责维持资本市场公平竞争环境的监管机构的担忧。
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引用次数: 2
Obesity and the Availability of Fast-Food: An Instrumental Variables Approach 肥胖和快餐的可得性:一个工具变量方法
R. Dunn
This paper addresses the simultaneous determination of fast-food availability on obesity rates through the use of instrumental variables, specifically the number of interstate exits in the county of residence. Using the 2005 Behavioral Risk Factor Surveillance Survey and self-collected data on the density of various fast-food restaurants in US counties, I find that a ten percent increase in the number of restaurants from the mean would increase BMI by .33 points, roughly 1.05kg for a male 1.78 meters tall and .88kg for a female 1.64 meters tall. The results are robust to the selection criteria for counties and the method yields results comparable to previous work looking at rural counties, though the sample employed here is much more generalizable.
本文通过使用工具变量,特别是居住县的州际出口数量,解决了快餐可获得性对肥胖率的同时确定。利用2005年行为风险因素监测调查和美国各县各种快餐店密度的自我收集数据,我发现餐馆数量比平均值增加10%,体重指数将增加0.33点,大约1.78米高的男性1.05公斤,1.64米高的女性0.88公斤。结果对于县的选择标准是稳健的,并且该方法产生的结果与之前研究农村县的工作相当,尽管这里使用的样本更具普遍性。
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引用次数: 37
An Appraisal of US Practice Relating to 'Enemy Combatants' 对美国“敌方战斗人员”做法的评价
Pub Date : 2007-12-01 DOI: 10.1017/S1389135907002322
G. Rona
This note explores the use and abuse by the U.S. of the law of armed conflict, and related consequences in the realm of international human rights obligations, that result from designation of persons as 'enemy combatants' or 'unlawful enemy combatants' in the fight against terrorism. Section II briefly describes factors that do and do not trigger application of the law of armed conflict and the consequences of whether or not it applies. Section III describes the two subcategories of armed conflict - international and non-international - and how IHL does and does not apply to various aspects of the so-called 'war against terror', as they fall within the scope of international armed conflict, non-international armed conflict and non-armed conflict. It then describes the IHL concept of 'combatant' (privileged belligerent) and its alternative, 'civilian', the appropriate designation for persons who do not qualify for combatant status even though they may participate in hostilities. Having distinguished between the two categories of armed conflict and of individuals who fall there under, Section III then discusses the scope of application of human rights law to such individuals, even where IHL is the primary source of applicable law. With the scope of application of legal frameworks to distinct categories of individuals having been established in Sections II and III, Section IV then describes the non-conforming concept and consequences of being designated an 'enemy combatant' by the US administration, and how that concept and those consequences have been debated and affected by domestic legislation and litigation. Finally, Section V concludes with recommendations to bring US practice back in to line with US international legal obligations.
本报告探讨了美国在反恐斗争中对武装冲突法的使用和滥用,以及在国际人权义务领域因将某些人指定为“敌方战斗人员”或“非法敌方战斗人员”而产生的相关后果。第二节简要叙述了触发和不触发武装冲突法适用的因素,以及是否适用该法的后果。第三部分描述了武装冲突的两个子类别——国际性和非国际性——以及国际人道法在所谓“反恐战争”的各个方面如何适用和不适用,因为它们属于国际性武装冲突、非国际性武装冲突和非武装冲突的范围。然后介绍了国际人道法中“战斗员”(特权交战国)的概念及其替代概念“平民”,即对即使可能参与敌对行动但不具备战斗员资格的人的适当称呼。在区分了两类武装冲突和属于武装冲突的个人之后,第三节接着讨论了人权法对这类个人的适用范围,即使在国际人道法是适用法律的主要来源的情况下。随着第二节和第三节中对不同类别个人的法律框架的适用范围的确立,第四节随后描述了被美国政府指定为“敌方战斗人员”的不符合概念和后果,以及该概念和这些后果是如何被国内立法和诉讼辩论和影响的。最后,第五节总结了使美国的做法与美国的国际法律义务保持一致的建议。
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引用次数: 11
Mental Health and Employment: The SAD Story 心理健康和就业:悲伤的故事
Nathan Tefft
This paper explores the relationship between health-related quality of life (HRQOL) measures and employment status in light of a constructed index related to Seasonal Affective Disorder that depends only on latitude and day of year. In models including demographic covariates and indicators for state, year, and quarter, more hours of darkness is associated with poorer HRQOL, which in turn is associated with a lower likelihood of employment. The relationships between the darkness index and HRQOL measures are stronger overall for women than for men. Inclusion of both the darkness index and the HRQOL measures in models of employment status determinants provides some evidence that the former operates through the latter in predicting a lower likelihood of employment. When specifying the darkness index as an instrument for HRQOL, each additional day of poor mental health per month leads to a 0.76 percentage point increase in the probability of unemployment among women.
本文探讨了健康相关的生活质量(HRQOL)措施和就业状况之间的关系,建立了一个与季节性情感障碍相关的指数,仅取决于纬度和一年中的一天。在包含人口统计协变量和州、年、季度指标的模型中,黑暗时间越长,HRQOL越差,而HRQOL反过来又与较低的就业可能性相关。总体而言,女性的黑暗指数与HRQOL指标之间的关系强于男性。在就业状况决定因素模型中纳入黑暗指数和HRQOL措施提供了一些证据,表明前者通过后者在预测较低就业可能性方面起作用。当将黑暗指数指定为衡量生活质量的一项指标时,每月心理健康状况不佳的天数每增加一天,妇女失业的可能性就会增加0.76个百分点。
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引用次数: 48
Beyond 80%: Are There New Ways of Increasing Vaccination Coverage? Evaluation of CCT Programs in Mexico and Nicaragua 超过80%:有增加疫苗接种覆盖率的新方法吗?墨西哥和尼加拉瓜有条件现金援助项目评价
L. Brenzel, T. Barham, J. Maluccio
This study evaluates the impact of the Mexican conditional cash transfer (CCT) program, Oportunidades and the Nicaraguan program, Red de Proteccion Social, on vaccination coverage for Bacille Calmette-Guerin (vaccine against tuberculosis), Diphtheria-Pertussis-Tetanus Vaccine, Oral Polio Vaccine and Measles-Containing Vaccine in children less than three years of age, using a randomized treatment and control design at the community level. The intent-to-treat effect on vaccination coverage is assessed using a double-difference estimator. This study found that in Mexico and Nicaragua, CCTs significantly contribute to increased vaccination coverage among children, particularly among those not reached by traditional program strategies, such as children living further from health facilities and with mothers having less than primary school
本研究采用社区一级的随机治疗和对照设计,评估了墨西哥有条件现金转移(CCT)计划(Oportunidades)和尼加拉瓜“社会保护计划”(Red de Proteccion Social)对三岁以下儿童接种卡介苗(Bacille Calmette-Guerin,结核病疫苗)、白喉-百日咳-破伤风疫苗、口服脊髓灰质炎疫苗和含麻疹疫苗的影响。意向治疗对疫苗接种覆盖率的影响使用双差估计器进行评估。本研究发现,在墨西哥和尼加拉瓜,有条件现金援助极大地提高了儿童的疫苗接种覆盖率,特别是那些传统规划战略无法覆盖到的儿童,例如居住在离卫生设施较远的地方的儿童以及母亲接受过小学以下教育的儿童
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引用次数: 21
Cost-Effectiveness of Drop-in-Centres to Prevent HIV Among Injecting Drug Users, IDUs, in Karachi, Pakistan 巴基斯坦卡拉奇注射吸毒者预防艾滋病毒注射中心的成本效益
A. Alban, Ditte Hjort Hansen, M. Fatima, S. Nielsen
Background: The HIV epidemic in Pakistan is at present concentrated among high-risk groups including IDUs. Pakistan has approx. 75 000 IDUs - 12 300 are living in Karachi. The HIV prevalence rate among the IDUs in Karachi is 26%. During 2005 and 2006 Pakistan Society, an NGO working for vulnerable populations in Pakistan, established three Drop-In-Centres, DICs, in Karachi including outreach services using motorbikes. At present 850 IDUs visit at a daily basis for clean needles, counselling and care services including detoxification (10%). Objectives: 1) To discuss the methodologies used to determine the cost-effectiveness of IDU interventions in Pakistan when up-scaling to 60% coverage as recommended by UNAIDS, 2) to examine how these interventions fair comparative to the findings from a literature review, and finally 3) to suggest policy options to improve efficiency of providing HIV preventive services that will keep the HIV epidemic from spreading into the general population. Methodology: The cost information was collected in May - June 2006. The costs included are financial and economic costs from the perspective of the provider. The Rapid Costing Approach, RCA, was used to generate total costs as well as the unit costs over five years under different up-scaling assumptions. The behaviour change for the IDU population in Karachi is derived from surveys undertaken in 2005/2006 and imputed into a dynamic mathematical model (IDU 2.4) with data from the IDU population in Karachi. The costs of the IDU interventions in Karachi is being compared with the findings from a literature survey on costing and cost-effectiveness studies in Asia and Eastern Europe, which is also characterized by HIV epidemics driven by IDUs and sex workers. Results: The results show unit costs of IDU interventions in the range of USD 74-105 per IDU/year ranging from 100% utilisation of capacity to 70%. The cost-effectiveness ratio is estimated at USD 78-242 per HIV over five years - the range covering different coverage of intervention (7-60%) and 3% or 6% discount rate, respectively. A comparison with results from Bangladesh (3 year time horizon) shows that the IDU interventions provide a relatively better cost-effectiveness ratio at USD 64-200 per HIV averted comparative to Karachi IDU interventions at USD 117-260. Both IDU approaches are very cost-effective by any measure at USD 2-25 per DALY gained. Discussions: The discussion includes how sensitive the results are to changes of key variables and what it will take to ensure such favourable cost-effectiveness ratio; the validity and reliability of the mathematical model; and finally what messages the result bring to the table of decision makers.
背景:目前巴基斯坦的艾滋病毒流行集中在包括注射吸毒者在内的高危人群中。巴基斯坦大约有。75 000注射吸毒者- 12 300人生活在卡拉奇。卡拉奇注射吸毒者的艾滋病毒感染率为26%。2005年和2006年期间,为巴基斯坦弱势群体工作的非政府组织巴基斯坦协会在卡拉奇建立了三个救助中心,包括使用摩托车提供外联服务。目前,每天有850名注射吸毒者前来就诊,获得清洁针头、咨询和包括戒毒在内的护理服务(10%)。目标:1)讨论在按照联合国艾滋病规划署的建议将IDU覆盖率提高到60%时,用于确定巴基斯坦IDU干预措施成本效益的方法;2)检查这些干预措施如何与文献综述的结果相比较;最后3)提出政策选择,以提高提供艾滋病毒预防服务的效率,防止艾滋病毒流行病蔓延到一般人群。方法:成本信息收集于2006年5 - 6月。从提供者的角度来看,所包含的成本是财务和经济成本。快速成本计算法(RCA)用于在不同的扩大规模假设下产生总成本和五年的单位成本。卡拉奇IDU人口的行为变化来自2005/2006年进行的调查,并根据卡拉奇IDU人口的数据输入动态数学模型(IDU 2.4)。目前正在将卡拉奇注射吸毒者干预措施的费用与一项关于亚洲和东欧成本和成本效益研究的文献调查的结果进行比较,该地区的特点也是由注射吸毒者和性工作者造成的艾滋病毒流行。结果:结果显示,IDU干预措施的单位成本为74-105美元/ IDU/年,利用率从100%到70%不等。成本-效果比估计为5年内每例艾滋病毒78-242美元,这一范围分别涵盖不同的干预覆盖率(7-60%)和3%或6%的贴现率。与孟加拉国(3年时间范围)的结果进行比较表明,与卡拉奇(117-260美元)的IDU干预措施相比,IDU干预措施提供了相对更好的成本效益比,为每预防艾滋病毒64-200美元。以任何标准衡量,IDU的两种方法都非常具有成本效益,每获得2-25美元。讨论:讨论包括结果对关键变量的变化有多敏感,以及如何确保这种有利的成本效益比;数学模型的有效性和可靠性;最后,这个结果给决策者带来了什么信息。
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引用次数: 2
Can Adolescents' Obesity Be a Consequence of Peers Lifestyles? 青少年肥胖是同龄人生活方式的结果吗?
M. I. Clímaco, Pedro P. Barros, Ó. Lourenço
Obesity is an important problem of public health, which is often initiated by unhealthy behaviours during adolescence. Food habits among young people are generally influenced by their peers, the so-called "peer pressure", as well as other hazardous consumptions such as alcohol, tobacco and drugs. In this work, obesity is viewed as a household produced good, and self-image and social interactions are likely to play a key role in determining adolescent weight. The main objective of this paper is to identify the risk factors which may explain obesity/overweight among the group of adolescents, according to the Body Mass-for-age, a medical criterion alternative to the BMI adapted to adolescents. Moreover, it aims to draw attention to the dimension of the problem in a risk group composed of potential future obese adults, with all the associated health costs. Particular attention is paid to the potential influence of the peer pressure effect on obesity, since consumption decisions are affected by age peers. A recursive simultaneous equation model, involving two binary choice variables, has been developed, incorporating the importance of peer effects and to control its potential endogenous nature. Control variables include age, gender, school performance, family cohesion, friendship cohesion, social and economical family level, food habits, sports practice, and consumption of addictive substances. The data used are from a Portuguese survey on the health of adolescents made in 2002. The universe of this survey is composed of students in the 6th, 8th and 10th years of secondary education, with ages between 11 and 25 years old. The key finding is that peer effects play a significant role in the probability of obesity. Dieting and corporal self-image are also important determinants of obesity.
肥胖是一个重要的公共卫生问题,往往是由青少年时期的不健康行为引起的。年轻人的饮食习惯通常受到同龄人的影响,即所谓的“同伴压力”,以及其他有害消费,如酒精、烟草和毒品。在这项研究中,肥胖被认为是家庭产生的好现象,自我形象和社会互动可能在决定青少年体重方面发挥关键作用。本文的主要目的是根据年龄体重(一种替代青少年体重指数的医学标准),确定可能解释青少年群体肥胖/超重的风险因素。此外,它的目的是引起人们对一个由潜在的未来肥胖成年人组成的风险群体的问题的关注,以及所有相关的健康成本。特别关注同伴压力效应对肥胖的潜在影响,因为消费决策受到同龄人的影响。已经开发了一个涉及两个二元选择变量的递归联立方程模型,该模型结合了对等效应的重要性并控制了其潜在的内生性质。控制变量包括年龄、性别、学习成绩、家庭凝聚力、友谊凝聚力、社会经济家庭水平、饮食习惯、体育锻炼和成瘾物质的消费。所使用的数据来自2002年进行的葡萄牙青少年健康调查。本次调查的对象是11岁至25岁的高中六年级、八年级和十年级学生。关键的发现是同伴效应在肥胖的可能性中起着重要作用。节食和身体自我形象也是肥胖的重要决定因素。
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引用次数: 2
Reimbursement of New Health Technologies in a DRG-System drg系统中新卫生技术的报销
S. Briswalter, R. Welte
Rationale: A prospective reimbursement system based on Diagnosis Related Groups (DRGs) has been recently introduced in several European countries for acute inpatient treatment, e.g. in Germany in 2003. To enable the application of new health technologies a special reimbursement process has been developed for those technologies. Objectives: To present how new technologies can be reimbursed under DRG-conditions, using Germany as a case example. Methods: Material of the official German DRG-Institute (InEK - Institut fur das Entgeltsystem im Krankenhaus gGmbH), the German hospital society (DKG - Deutsche Krankenhausgesellschaft) and the biggest German health insurance (AOK - Allgemeine Ortskrankenkasse) was screened manually and electronically. In addition, interviews with experts of those organisations were conducted. Results: New technologies causing higher costs for hospitals are not adequately compensated within the current G- (German) DRG-system. Since 2005, they can be reimbursed with a special add on (NUB - Neue Untersuchungs- und Behandlungsmethode). Each hospital has to apply for a NUB individually by the end of October at the InEK which decides by the end of December whether the respective hospital will get a NUB for one year. This decision is based on the submitted evidence on the medical effectiveness and economic impact of the new technology on the hospital. The NUB will not be granted if there is not enough medical or economic evidence or if the new technology does not lead to a specific increase of costs. The value of this threshold is only known by the InEK. The amount of the NUB depends on negotiations between the individual hospital and the sick funds and can differ between hospitals. When there is enough data of resource use and costs for the new technology the InEK will determine either (1) a national add on (Zusatzentgelt) which is applicable for all hospitals or (2) adjust the payments for the existing DRGs which include the new technology or (3) even create a new DRG. The number of NUBs substantially increased from 26 in 2005 to 54 in 2006 while the number of national add ons increased from 71 to 82 in the same time period indicating that the system enables the dissemination of technologies causing higher costs for the hospital. Conclusions: The G-DRG-system seems not to substantially hinder the introduction and adaptation of new technologies causing substantially higher costs for the hospital. However, there are no incentives to implement new technologies that are rather inexpensive for the hospital. Clearly, this problem should be addressed by the InEK.
理由:基于诊断相关组(DRGs)的前瞻性报销系统最近在几个欧洲国家用于急性住院治疗,例如2003年在德国。为了能够应用新的保健技术,已经为这些技术制定了一个特别的偿还程序。目的:以德国为例,介绍在drg条件下如何补偿新技术。方法:对德国官方drg研究所(InEK -Institut fur das Entgeltsystem im Krankenhaus gGmbH)、德国医院学会(DKG - Deutsche Krankenhausgesellschaft)和德国最大的健康保险公司(AOK - Allgemeine Ortskrankenkasse)的资料进行人工和电子筛选。此外,我们亦与这些机构的专家进行了访谈。结果:新技术给医院带来更高的成本,在目前的G-(德国)drg系统中没有得到充分补偿。自2005年以来,他们可以通过特殊的附加(NUB - Neue Untersuchungs- and behandlunsmethod)来报销。每家医院必须在10月底之前单独向InEK提出申请,InEK在12月底之前决定该医院是否获得为期一年的NUB。这一决定是基于提交的关于新技术对医院的医疗效果和经济影响的证据。如果没有足够的医学或经济证据,或者新技术不会导致成本的具体增加,则不会批准NUB。这个阈值只有InEK知道。NUB的数额取决于个别医院和病人基金之间的谈判,不同医院之间可能有所不同。当有足够的新技术的资源使用和成本数据时,InEK将决定:(1)适用于所有医院的国家附加费用(Zusatzentgelt),或(2)调整包括新技术的现有DRG的支付,或(3)甚至创建新的DRG。nub的数量从2005年的26家大幅增加到2006年的54家,而同期全国新增医院的数量从71家增加到82家,这表明该系统能够传播给医院带来更高成本的技术。结论:g - drg系统似乎不会严重阻碍新技术的引进和适应,从而导致医院的成本大幅增加。然而,对于医院来说,没有激励措施来实施相当便宜的新技术。显然,这个问题应该由InEK来处理。
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引用次数: 1
Probit Models with Dummy Endogenous Regressors 具有虚拟内生回归量的概率模型
J. Arendt, Holm Anders Larsen
This study considers heckit-type approximations useful for a number of different trivariate probit models. They are simple to use and have no convergence problems like full maximum likelihood. Simulations show that a heckit and a least squares approximation perform as well as the trivariate probit estimator in small samples when the degree of endogeneity is not too severe. A simple double-heckit and a heteroskedasticity corrected heckit approximation seem particularly robust and promising for testing exogeneity. The methods are used to estimate the impact of physician advice on physical activity, where the heckit approximations work as well as full maximum likelihood.
本研究认为heckit类型的近似对许多不同的三变量概率模型是有用的。它们使用起来很简单,没有像完全极大似然这样的收敛问题。仿真结果表明,当内生性程度不太严重时,heckit和最小二乘近似在小样本中的表现与三元概率估计一样好。一个简单的双heckit和异方差校正的heckit近似似乎特别稳健,并有希望测试外源性。这些方法用于估计医生建议对身体活动的影响,其中heckit近似值和完全最大可能性一样有效。
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引用次数: 24
Quality of Private Health Services in Vietnam 越南私人保健服务的质量
Thuy Phan Thanh, Long Nguyen Hoang, B. Forsberg
Objective: To analyze the quality of private health services in Bac Giang City, Vietnam. Method: All private health care providers were assessed for quality of care through site visits and interviews. Structure including equipment and staffing was assessed through interview with the facility manager and competence of private health providers was investigated through interviews of staff using vignettes on cases with tracer conditions for acute and chronic disease. Patient exit interviews were performed to assess patient satisfaction with services. In addition, staff in public Commune Health Centers was interviewed with vignettes to allow for comparison of skills with private providers. Results: 50 private medicine facilities were included in the study. The facilities were small in scope, mainly out-patient clinics. They were mostly operated by a single physician (66%), or small group of physicians. Services were mainly regular examination and treatment (76%) with common health problems. Only 20% offered more advanced services like ECG and X-Ray. Most private allopathic medicine providers had basic equipment for examining patients but little equipment for basic surgery and testing. Around half (55%) had sterilizing instrument. In patient interviews stated reasons for seeking private care were good attitude of staff (72%), proximity to home (69%), perceived competence of physician (63%) and time-saving (58%). Mean score of overall client satisfaction was 3.9 on a scale of 1-5. Knowledge on recognizing symptoms and handling cases of was low both in private and public facilities. Conclusion: Most private providers at urban district level are limited in size, staffing, service provision and patient load. Their services are usually appreciated by clients. However, their skills appear to be less than optimal, though not significantly lower than those of public sector staff.
目的:分析越南北江市民营卫生服务质量。方法:通过实地访问和访谈对所有私人医疗服务提供者的服务质量进行评估。通过与设施管理人员面谈,评估了包括设备和人员编制在内的结构,并通过对患有急性和慢性疾病示踪条件的病例进行调查,对工作人员进行了面谈,调查了私营保健提供者的能力。进行患者退出访谈以评估患者对服务的满意度。此外,还对公共社区保健中心的工作人员进行了小访谈,以便与私营提供者的技能进行比较。结果:共纳入50家民营医疗机构。这些设施规模很小,主要是门诊诊所。它们大多由一名医生(66%)或一小群医生进行手术。服务主要是针对常见健康问题的定期检查和治疗(76%)。只有20%的人提供心电图和x光等更先进的服务。大多数私人对抗疗法提供者有基本的检查病人的设备,但基本的手术和测试设备很少。大约一半(55%)有消毒器具。在患者访谈中,寻求私人护理的原因是工作人员的良好态度(72%)、离家近(69%)、医生的能力(63%)和节省时间(58%)。整体客户满意度的平均得分为3.9分(分值为1-5)。私营和公共机构对诊断症状和处理病例的知识都很低。结论:大多数市区私营医疗机构在规模、人员配置、服务提供和患者负荷等方面存在局限性。他们的服务通常受到客户的赞赏。然而,他们的技能似乎不是最理想的,虽然并不明显低于公共部门工作人员。
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iHEA 2007 Sixth World Congress: Explorations in Health Economics (Archive)
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