Comparison between RDS and WebRDS for epidemiological studies

e202412062es

Authors

  • Pedro Ferrer Rosende Grupo de investigación en riesgos psicosociales, organización del trabajo y salud (POWAH), Universitat Autònoma de Barcelona (UAB). Cerdanyola del Vallès. España. / Unitat de Bioestadística, Facultat de Medicina, Universitat Autònoma de Barcelona (UAB). Cerdanyola del Vallès. España. / Programa de doctorado en Metodología de la Investigación Biomédica y Salud Pública, Universitat Autònoma de Barcelona (UAB). Cerdanyola del Vallès. España. https://orcid.org/0000-0002-3791-4696
  • Laura Esteve Matalí Grupo de investigación en riesgos psicosociales, organización del trabajo y salud (POWAH), Universitat Autònoma de Barcelona (UAB). Cerdanyola del Vallès. España. / Unitat de Bioestadística, Facultat de Medicina, Universitat Autònoma de Barcelona (UAB). Cerdanyola del Vallès. España. https://orcid.org/0000-0001-6561-0131
  • Valeria Stuardo Ávila Instituto de Salud Pública, Universidad Andrés Bello. Santiago. Chile. https://orcid.org/0000-0001-9861-0285
  • Mauricio Fuentes Alburquenque Programa de Bioestadística, Escuela de Salud Pública, Facultad de Medicina, Universidad de Chile. Santiago. Chile. https://orcid.org/0000-0001-7040-0040
  • Albert Navarro Giné Grupo de investigación en riesgos psicosociales, organización del trabajo y salud (POWAH), Universitat Autònoma de Barcelona (UAB). Cerdanyola del Vallès. España. / Unitat de Bioestadística, Facultat de Medicina, Universitat Autònoma de Barcelona (UAB). Cerdanyola del Vallès. España. / Instituto de Estudios del Trabajo (IET), Universitat Autònoma de Barcelona (UAB). Cerdanyola del Vallès. España. https://orcid.org/0000-0001-7153-4673

Keywords:

respondent-driven sampling, RDS, WebRDS, bias

Abstract

In epidemiological and social studies on populations without a sampling frame or that are hard to reach, respondent-driven sampling (RDS), under certain assumptions, has the potential to produce asymptotically unbiased and efficient population estimates for these populations. While RDS is typically conducted face-to-face, the online version (WebRDS) has gained attention due to its potential advantages, although its disadvantages are also rising concern in the methodological debate.

This study contributes to the methodological debate by critically comparing these two formats at the level of application and potential biases, where the online version offers improved speed and lower costs but raises concerns about potential biases due to a lack of face-to-face instructions regarding definition of the social network size and peer-recruiting process. Both formats can generate unbiased estimates, however, it's crucial to carefully consider potential sources of bias to meet the necessary assumptions.

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Published

2024-12-04 — Updated on 2024-12-04

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Ferrer Rosende P, Esteve Matalí L, Stuardo Ávila V, Fuentes Alburquenque M, Navarro Giné A. Comparison between RDS and WebRDS for epidemiological studies: e202412062es. Rev Esp Salud Pública [Internet]. 2024 Dec. 4 [cited 2025 Feb. 12];98:7 páginas. Available from: https://ojs.sanidad.gob.es/index.php/resp/article/view/579

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