The impact of decentralized data entry on the quality of household survey data in developing countries: Evidence from a randomized experiment in Vietnam

Paul Glewwe, Hai Anh Hoang Dang

Research output: Contribution to journalArticle

2 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)165-185
Number of pages21
JournalWorld Bank Economic Review
Volume22
Issue number1
DOIs
StatePublished - Mar 20 2008

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