How Reliable are Income Data Collected with a Single Question?

Micklewright, John and Schnepf, Sylke (2009) How Reliable are Income Data Collected with a Single Question? NCRM Working Paper. Department of Quantitative Social Science, Institute of Education. (Unpublished)

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Income is an important correlate for numerous phenomena in the social sciences. But many surveys collect data with just a single question covering all forms of income. This raises questions over the reliability of the data collected. Issues of reliability are heightened when individuals are asked about the household total rather than own income alone. We argue that the large literature on measuring incomes has not devoted enough attention to ‘single-question’ surveys. We investigate the reliability of single-question data using the ONS Omnibus survey and British Social Attitudes (BSA) survey as examples. We compare the distributions of income in these surveys – individual income in the Omnibus and household income in the BSA --- with those in two larger UK surveys that measure income in much greater detail. Distributions compare less well for household income than for individual income. Disaggregation by gender proves fruitful in much of the analysis. We also establish levels of item non-response to the income question in single-question surveys from a wide range of countries.

Item Type: Working Paper (NCRM Working Paper)
Subjects: 2. Data Collection > 2.12 Data Collection (other)
5. Quantitative Data Handling and Data Analysis > 5.17 Quantitative Approaches (other)
Depositing User: ADMIN user
Date Deposited: 23 Jun 2010 10:33
Last Modified: 14 Jul 2021 13:52

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