Re-weighting the OHS and LFS National household Survey Data to create a consistent series over time: A Cross Entropy Estimation Approach
In the absence of South African longitudinal data for the ten years post apartheid, national cross-sectional household survey data is frequently used to analyse change over time. When these data are stacked side-by-side however, they reveal inconsistencies both in trends across time and between the household and person level data. These inconsistencies can introduce biases into research which analyse change. This study calculates a new set of person and household weights for the October Household Surveys between 1995 and 1999 and the Labour Force Surveys between 2000 and 2004. A cross entropy estimation approach is used. This approach is favoured because the calculated weights are similar to the initial sample weights (and hence retain the survey design benefits) while simultaneously being consistent with aggregate auxiliary data. A consistent series of aggregates from the Actuarial Society of South Africa (ASSA) model and the 1996 and 2001 South African Census data are used as benchmarks. The new weights result in consistent demographic and geographic trends over time and greater consistency between person and household level data.
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- Joachim Merz & Henning Stolze, 2005.
"Representative Time Use Data and Calibration of the American Time Use Studies 1965-1999,"
54, Research Institute on Professions (Forschungsinstitut Freie Berufe (FFB)), LEUPHANA University Lüneburg, revised Jan 2006.
- Merz, Joachim & Stolze, Henning, 2006. "Representative Time Use Data and Calibration of the American Time Use Studies 1965-1999," MPRA Paper 5856, University Library of Munich, Germany.
- Johannes G. Hoogeveen & Berk Özler, 2005.
"Not Separate, Not Equal: Poverty and Inequality in Post-Apartheid South Africa,"
William Davidson Institute Working Papers Series
wp739, William Davidson Institute at the University of Michigan.
- Berk Ã–zler, 2007. "Not Separate, Not Equal: Poverty and Inequality in Post-apartheid South Africa," Economic Development and Cultural Change, University of Chicago Press, vol. 55, pages 487-529.
- Ozler, Berk, 2007. "Not Separate, Not Equal: Poverty and Inequality in Post-apartheid South Africa," Economic Development and Cultural Change, University of Chicago Press, vol. 55(3), pages 487-529, April.
- Iain Fraser, 2000. "An application of maximum entropy estimation: the demand for meat in the United Kingdom," Applied Economics, Taylor & Francis Journals, vol. 32(1), pages 45-59.
- Anne-Sophie Robilliard & Sherman Robinson, 2003.
"Reconciling Household Surveys and National Accounts Data Using a Cross Entropy Estimation Method,"
Review of Income and Wealth,
International Association for Research in Income and Wealth, vol. 49(3), pages 395-406, 09.
- Robilliard, Anne-Sophie & Robinson, Sherman, 1999. "Reconciling household surveys and national accounts data using a cross entropy estimation method:," TMD discussion papers 50, International Food Policy Research Institute (IFPRI).
- Cally Ardington & David Lam & Murray Leibbrandt & Matthew Welch, 2005. "The Sensitivity of Estimates of Post-Apartheid Changes in South African Poverty and Inequality to key Data Imputations," SALDRU/CSSR Working Papers 106, Southern Africa Labour and Development Research Unit, University of Cape Town.
- Golan, Amos & Judge, George G. & Miller, Douglas, 1996. "Maximum Entropy Econometrics," Staff General Research Papers 1488, Iowa State University, Department of Economics.
- Geeta Kingdon & John Knight, 2005.
"Unemployment in South Africa, 1995-2003: Causes, Problems and Policies,"
Economics Series Working Papers
GPRG-WPS-010, University of Oxford, Department of Economics.
- Geeta Kingdon & John Knight, 2007. "Unemployment in South Africa, 1995--2003: Causes, Problems and Policies," Journal of African Economies, Centre for the Study of African Economies (CSAE), vol. 16(5), pages 813-848, November.
- Nicola Branson & Martin Wittenberg, 2007. "The Measurement Of Employment Status In South Africa Using Cohort Analysis, 1994-2004," South African Journal of Economics, Economic Society of South Africa, vol. 75(2), pages 313-326, 06.
- Joachim Merz, 1994.
"Microdata Adjustment by the Minimum Information Loss Principle,"
10, Research Institute on Professions (Forschungsinstitut Freie Berufe (FFB)), LEUPHANA University Lüneburg.
- Merz, Joachim, 1994. "Microdata Adjustment by the Minimum Information Loss Principle," MPRA Paper 7231, University Library of Munich, Germany.
- Rulof Burger & Derek Yu, 2006.
"Wage trends in post-apartheid South Africa: Constructing an earnings series from household survey data,"
10/2006, Stellenbosch University, Department of Economics.
- Rulof Burger & Derek Yu, 2007. "Wage Trends in Post-Apartheid South Africa: Constructing an Earnings Series from Household Survey Data," Working Papers 07117, University of Cape Town, Development Policy Research Unit.
- Dorrit Posel & Daniela Casale, 2003. "What Has Been Happening To Internal Labour Migration In South Africa, 1993-1999?," South African Journal of Economics, Economic Society of South Africa, vol. 71(3), pages 455-479, 09.
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