The ABCDE of Big Data: Assessing Biases in Call-Detail Records for Development Estimates

Gabriel Pestre, Emmanuel Letouzé and Emilio Zagheni

The World Bank Economic Review, 2020, vol. 34, issue Supplement_1, S89-S97

Abstract: This article contributes to improving our understanding of biases in estimates of demographic indicators, in the developing world, based on Call Detail Records (CDRs). CDRs represent an important and largely untapped source of data for the developing world. However, they are not representative of the underlying population. We combine CDRs and census data for Senegal in 2013 to evaluate biases related to estimates of population density. We show that: (i) there are systematic relationships between cell-phone use and socio-economic and geographic characteristics that can be leveraged to improve estimates of population density; (ii) when no ‘ground truth’ data is available, a difference-in-difference approach can be used to reduce bias and infer relative changes over time in population size at the subnational level; (iii) indicators of development, including urbanization and internal, circular, and temporary migration, can be monitored by integrating census data and CDRs. The paper is intended to offer a methodological contribution and examples of applications related to combining new and traditional data sources to improve our ability to monitor development indicators over time and space.

Keywords: Big Data; national statistics; demographic indicators; call detail records; sample bias correction; digital breadcrumbs (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://hdl.handle.net/10.1093/wber/lhz039 (application/pdf)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:oup:wbecrv:v:34:y:2020:i:supplement_1:p:s89-s97.

Ordering information: This journal article can be ordered from
https://academic.oup.com/journals

Access Statistics for this article

The World Bank Economic Review is currently edited by Eric Edmonds and Nina Pavcnik

More articles in The World Bank Economic Review from World Bank Oxford University Press, Great Clarendon Street, Oxford OX2 6DP, UK. Contact information at EDIRC.
Bibliographic data for series maintained by Oxford University Press ().