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首页> 外文期刊>Review of Income and Wealth >Using The P90/p10 Index To Measure U.s. Inequality Trendswith Current Population Survey Data: A View From inside The Census Bureau Vaults
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Using The P90/p10 Index To Measure U.s. Inequality Trendswith Current Population Survey Data: A View From inside The Census Bureau Vaults

机译:使用P90 / p10指数测量美国当前人口调查数据显示的不平等趋势:人口普查局金库内部的视图

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摘要

The March Current Population Survey (CPS) is the primary data source for estimation of levels and trends in U.S. earnings and income inequality. However, time-inconsistency problems related to top coding lead many CPS users to measure inequality via the ratio of the 90th to the 10th percentile (P90/P10) rather than by more traditional summary measures. With access to public use and restricted-access internal CPS data, and by applying bounding methods, we show that using P90/P10 does not completely obviate time-inconsistency problems, especially in capturing household income inequality trends. Using internal data, we create consistent cell mean values for all top-coded public use values that, when used with public use data, closely track inequality trends in earnings and household income using internal data. But estimates of longer-term inequality trends with these corrected data based on P90/P10 differ from those based on the Gini coefficient. The choice of inequality measure still matters.
机译:3月当前人口调查(CPS)是估算美国收入和收入不平等水平和趋势的主要数据来源。但是,与顶部编码有关的时间不一致问题导致许多CPS用户通过第90个百分点与第10个百分点的比率(P90 / P10)而不是通过更传统的汇总度量来度量不平等。通过访问公共使用和受限访问的内部CPS数据,以及通过应用边界方法,我们显示使用P90 / P10不能完全消除时间不一致问题,尤其是在捕获家庭收入不平等趋势方面。使用内部数据,我们为所有最常用的公共使用值创建一致的单元均值,这些均值与公共使用数据一起使用时,可以使用内部数据密切跟踪收入和家庭收入的不平等趋势。但是,基于P90 / P10的这些校正数据对长期不平等趋势的估计与基于基尼系数的估计有所不同。不平等措施的选择仍然很重要。

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