Bridging techniques in the redesign of the Italian Survey on Household Income and Wealth

Romina Gambacorta () and Eleonora Porreca
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Romina Gambacorta: Bank of Italy, Directorate General for Economics, Statistics and Research

METRON, 2025, vol. 83, issue 1, No 4, 43-74

Abstract: Abstract The design of the Bank of Italy’s Survey on Household Income and Wealth was revised in 2020 to reduce non-sampling errors in households’ income and wealth and improve data quality. The new sample allocation resulted in greater participation in the upper parts of the income distribution, determining a reduction in standard errors and in the bias of income and wealth estimators. However, the revision of the sample makes it difficult to compare the results with those obtained in previous survey waves. This paper discusses different weighting strategies, i.e. cell weighting, raking and inverse probability weighting, used to deal with the redesign discontinuity and to obtain comparable estimates with previous waves. Comparing results across different dimensions, the method that produces the most reliable results is based on the use of the raking technique and, therefore, it is the one recommended for time series analysis.

Keywords: Survey sampling design; Weighting; Calibration; Income and wealth distribution (search for similar items in EconPapers)
JEL-codes: C83 D31 (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s40300-024-00272-9

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