The Impact of Decentralized Data Entry on the Quality of Household Survey Data in Developing Countries: Evidence from a Randomized Experiment in Vietnam

34 Pages Posted: 16 Jun 2008 Last revised: 26 Nov 2013

See all articles by Paul Glewwe

Paul Glewwe

University of Minnesota - College of Agricultural, Food and Environmental Sciences - Department of Applied Economics

Hai-Anh Dang

World Bank - Development Data Group (DECDG); IZA Institute of Labor Economics; Indiana University Bloomington - School of Public & Environmental Affairs (SPEA); Global Labor Organization (GLO); Vietnam National University Ha Noi; Vietnam Academy of Social Sciences (VASS) - Centre for Analysis and Forecasting

Date Written: 2008

Abstract

Computers were provided to randomly selected districts participating in a household survey in Vietnam to assess the impact on data quality of entering data within a day or two of completing the interview rather than several weeks later in the provincial capital. Provision of computers had no significant effect on the observed distribution of household expenditures and thus no effect on measured poverty. Provision of computers reduced the mean number of errors per household by 5-23 percent, depending on the type of error. Given the already low rate of errors in the survey, however, the goal of increasing the precision of the estimated mean of a typical variable can be achieved at a much lower cost by slightly increasing the sample size. Provision of additional computers did substantially reduce the time interviewers spent adding up and checking the data in the field, with the value of the time saved close to the cost of purchasing desktop computers.

Keywords: C81, C93, C42, I32, O15

Suggested Citation

Glewwe, Paul and Dang, Hai-Anh H., The Impact of Decentralized Data Entry on the Quality of Household Survey Data in Developing Countries: Evidence from a Randomized Experiment in Vietnam (2008). The World Bank Economic Review, Vol. 22, Issue 1, pp. 165-185, 2008, Available at SSRN: https://ssrn.com/abstract=1146329 or http://dx.doi.org/lhm023

Paul Glewwe (Contact Author)

University of Minnesota - College of Agricultural, Food and Environmental Sciences - Department of Applied Economics ( email )

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Hai-Anh H. Dang

World Bank - Development Data Group (DECDG) ( email )

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IZA Institute of Labor Economics ( email )

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Indiana University Bloomington - School of Public & Environmental Affairs (SPEA) ( email )

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Global Labor Organization (GLO) ( email )

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Vietnam National University Ha Noi ( email )

Vietnam Academy of Social Sciences (VASS) - Centre for Analysis and Forecasting ( email )

1 Lieu Giai Street
Hanoi
Vietnam

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