The bounds of the concentration index when the variable of interest is binary, with an application to immunization inequality
The bounds of the concentration index when the variable of interest is binary, with an application to immunization inequality
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DOI：
10.1002/hec.953
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发表时间：
2005-04-01
期刊：
影响因子：
2.1
通讯作者：
Wagstaff, A
中科院分区：
文献类型：
--
作者：
Wagstaff, A
当正在调查其不等价性的卫生部门变量是二进制时，集中指数的最小和最大可能值分别等于Mu-1和1-Mu，其中Mu是所述变量的平均值。因此，随着平均值的增加，浓度指数的可能值的范围缩小，当平均值趋于1，浓度指数趋于零时，趋于零。举例说明了41个发展中国家的免疫水平和免疫不平等情况，以及选定国家的免疫覆盖率变化和不平等情况。版权所有(C)2004 John Wiley W Sons，Ltd.
When the health sector variable whose inequality is being investigated is binary, the minimum and maximum possible values of the concentration index are equal to mu-1 and 1-mu, respectively, where mu is the mean of the variable in question. Thus as the mean increases, the range of the possible values of the concentration index shrinks, tending to zero as the mean tends to one and the concentration index tends to zero. Examples are presented on levels of and inequalities in immunization across 41 developing countries, and on changes in coverage and inequalities in selected countries. Copyright (c) 2004 John Wiley W Sons, Ltd.