Decomposing response error in food consumption measurement: implications for survey design from a survey experiment in Tanzania

Jed Friedman (), Kathleen Beegle, Joachim De Weerdt and John Gibson

No 537166, Working Papers of LICOS - Centre for Institutions and Economic Performance from KU Leuven, Faculty of Economics and Business (FEB), LICOS - Centre for Institutions and Economic Performance

Abstract: There is wide variation in how consumption is measured in household surveys both across countries and over time. This variation may confound welfare comparisons in part because these alternative survey designs produce consumption estimates that are differentially influenced by contrasting types of survey response error. Although previous studies have documented the extent of net error in alternative survey designs, little is known about the relative influence of the different response errors that underpin a survey estimate. This study leverages a recent randomized food consumption survey experiment in Tanzania to shed light on the relative influence of these various error types. The observed deviation of measured household consumption from a benchmark is decomposed into item-specific consumption incidence and consumption value so as to investigate effects related to (a) the omission of any consumption and then (b) the error in value reporting conditional on positive consumption. The results show that various survey designs exhibit widely differing error decompositions, and hence a simple summary comparison of the total recorded consumption across surveys will obscure specific error patterns and inhibit the lessons for improved consumption survey design. In light of these findings, the relative performance of common survey designs is discussed, and design lessons are drawn to enhance the accuracy of item-specific consumption reporting and, consequently, the measures of total household food consumption.

Keywords: Food consumption; Household surveys; Response error; Recall; Telescoping (search for similar items in EconPapers)
Date: 2016
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Published in LICOS - Discussion paper series 375/2016 , pages 1-35

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Working Paper: Decomposing response errors in food consumption measurement: implications for survey design from a survey experiment in Tanzania (2016)
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