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Sample selection bias in adult mortality estimates from mobile phone surveys: Evidence from 25 low- and middle-income countries

Author

Listed:
  • Sahar Ahmed

    (Centre d'Estudis Demogràfics (CED))

  • Julio Romero-Prieto

    (London School of Hygiene and Tropical Medicine)

  • David A. Sánchez-Páez

    (Universidad de Valladolid)

  • Bruno Masquelier

    (Université catholique de Louvain)

  • Tom Pullum

    (ICF International)

  • Georges Reniers

    (London School of Hygiene and Tropical Medicine)

Abstract

Background: Mobile phone surveys are gaining traction in low- and middle-income countries, but mobile phone ownership (MPO) is not universal, potentially introducing sample selection bias in ensuing estimates. Objective: To evaluate MPO-associated sample selection bias in adult mortality estimates from sibling survival histories (SSH) administered to women of reproductive age. Methods: Using data from 25 Demographic and Health Surveys, we (1) used logistic regression to assess the association between MPO and sociodemographic background characteristics; (2) used SSH to compare the probability of dying in adulthood (45q15) in a general population sample of women of reproductive age and a subsample of women who own a mobile phone, (3) and evaluated the use of post-stratification weighting to correct bias in adult mortality estimates derived from the subsample of mobile phone owners. Results: MPO correlated with sociodemographic characteristics in a predictable fashion. Summary indices of adult mortality (45q15) using data on siblings from respondents who owned a mobile phone aligned with the general population estimate in 20 out of 25 countries. Significant bias was identified in Papua New Guinea, Burundi, Rwanda, Haiti, and Zimbabwe, with the estimate being typically lower when based on reports of mobile phone owners. Where it existed, bias was most pronounced at either end of the age spectrum (15–24 and 45–59). Post-stratification weighting alleviated this bias to levels that were no longer statistically significant, but the correction was not always in the desired direction. Conclusions: MPO-associated selection bias in adult mortality estimates from SSH is generally modest. Post-stratification weighting on respondents’ background characteristics does not always produce a correction in the expected direction and is to be used with caution. Contribution: This study advances our understanding of sample selection bias in mobile phone survey estimates of demographic indicators.

Suggested Citation

  • Sahar Ahmed & Julio Romero-Prieto & David A. Sánchez-Páez & Bruno Masquelier & Tom Pullum & Georges Reniers, 2024. "Sample selection bias in adult mortality estimates from mobile phone surveys: Evidence from 25 low- and middle-income countries," Demographic Research, Max Planck Institute for Demographic Research, Rostock, Germany, vol. 51(37), pages 1167-1182.
    • Handle: RePEc:dem:demres:v:51:y:2024:i:37
    DOI: 10.4054/DemRes.2024.51.37
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    References listed on IDEAS

    as
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    More about this item

    Keywords

    adult mortality; selection bias; mobile phones; data collection; sibling survival histories;
    All these keywords.

    JEL classification:

    • J1 - Labor and Demographic Economics - - Demographic Economics
    • Z0 - Other Special Topics - - General

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