摘要
保险公司有不同的利益主体,投资者和公司管理者关注的重点是公司效率,而投保人和监管机构关注的核心是保险公司的偿付能力,那么效率与偿付能力是否存在冲突,或者说,监管机构的偿付能力约束是否影响公司效率以及影响程度究竟如何,是业界和学术界关注的主要内容。本文从金融中介的视角,考虑不同利益主体,把偿付能力作为一产出指标,通过分析该指标的介入对效率的影响来研究偿付能力与效率之间的关系;在实证研究中,引入DEA的扩展模型—RAM,因为相对于DEA,RAM能更全面地反映保险公司的相对效率,所得到的效率值具有严格单调性,而且能处理指标出现负值的情况,这对于不多的样本特别具有吸引力;在检验不同类型保险公司的效率差异时,考虑到RAM方法得到的效率值是一个序数概念而不是绝对数量,本文采用Mann-Whitney秩和方法进行检验。
Insurance companies have different interest groups.Investors and corporate managers focus on the company efficiency,while the policyholders and regulators concern about solvency of the insurance company.In the insurance company business process,whether there is a conflict in efficiency and solvency,that is,whether solvency constraints imposed by the regulators interfere company efficiency and if any,the extent to which is a subject worthy of careful study.The answers to these questions are the main content of this paper.Considering a number of targets,we select output variable from the point of view of a financial intermediary and examine the efficiency of insurance companies.The effect of solvency on efficiency is then examined through contrast in efficiency with solvency output and efficiency without solvent output.In the empirical study,Range Adjusted Measure(RAM),as extended DEA model,is introduced because its properties,such as comprehensive strictly monotone,handling negative,and Mann-Whitney models is assumed to examine efficiency difference between different types of insurance companies.
出处
《统计研究》
CSSCI
北大核心
2011年第3期72-78,共7页
Statistical Research
关键词
财险公司
RAM模型
秩和检验
效率
偿付能力
Property Insurance Companies
Range Adjusted Measure(RAM)
Mann-Whitney
Efficiency
Solvency
作者简介
崔晓东,女,1972年生,汉,河南巩义人,河海大学商学院博士研究生,中国准精算师,南京晓庄学院。研究方向为金融工程与投资管理。
郑玉华,男,1976年生,汉,湖北潜江人,经济学博士,南京信息工程大学讲师,中国准精算师。研究方向为风险管理与保险精算。