International Journal of Public Health

, Volume 56, Issue 4, pp 407–417

Agreement between web-based and paper versions of a socio-demographic questionnaire in the NutriNet-Santé study

Authors

  • Anne-Claire Vergnaud
    • Unité de Recherche en Epidémiologie Nutritionnelle (UREN), UMR U557 Inserm/U1125 Inra/Cnam/Paris 13, CRNH IdFSMBH Paris 13
  • Mathilde Touvier
    • Unité de Recherche en Epidémiologie Nutritionnelle (UREN), UMR U557 Inserm/U1125 Inra/Cnam/Paris 13, CRNH IdFSMBH Paris 13
  • Caroline Méjean
    • Unité de Recherche en Epidémiologie Nutritionnelle (UREN), UMR U557 Inserm/U1125 Inra/Cnam/Paris 13, CRNH IdFSMBH Paris 13
  • Emmanuelle Kesse-Guyot
    • Unité de Recherche en Epidémiologie Nutritionnelle (UREN), UMR U557 Inserm/U1125 Inra/Cnam/Paris 13, CRNH IdFSMBH Paris 13
  • Clothilde Pollet
    • Unité de Recherche en Epidémiologie Nutritionnelle (UREN), UMR U557 Inserm/U1125 Inra/Cnam/Paris 13, CRNH IdFSMBH Paris 13
  • Aurélie Malon
    • Unité de Recherche en Epidémiologie Nutritionnelle (UREN), UMR U557 Inserm/U1125 Inra/Cnam/Paris 13, CRNH IdFSMBH Paris 13
  • Katia Castetbon
    • Unité de Surveillance et d’Epidémiologie Nutritionnelle (USEN), Institut de Veille SanitaireUniversité Paris 13
    • Unité de Recherche en Epidémiologie Nutritionnelle (UREN), UMR U557 Inserm/U1125 Inra/Cnam/Paris 13, CRNH IdFSMBH Paris 13
    • Unité de Surveillance et d’Epidémiologie Nutritionnelle (USEN), Institut de Veille SanitaireUniversité Paris 13
    • Département de Santé PubliqueHôpital Avicenne
Original Article

DOI: 10.1007/s00038-011-0257-5

Cite this article as:
Vergnaud, A., Touvier, M., Méjean, C. et al. Int J Public Health (2011) 56: 407. doi:10.1007/s00038-011-0257-5

Abstract

Objectives

Web-based studies nowadays raise a major interest as they can improve all steps involved in observational studies. Our objective was to compare the web-based version of the NutriNet-Santé self-administered socio-demographic and economic questionnaire with the traditional paper version.

Methods

Both versions of the questionnaire were sent to 170 volunteers and filled in by 147 of them (either paper first, n = 76, or web-based first, n = 71). Agreement between versions was assessed by intraclass correlations (ICC) and kappas.

Results

Agreement between both versions was high, with ICC and kappas ranging between 0.81–1.00 and 0.76–1.00, respectively, similarly across groups of administration order, age, gender and self-estimated web knowledge in general. The web-based version was the one preferred by 93.7% of the subjects and enabled to avoid 553 missing values (2.00% of the total entries), 24 inconsistent data (0.09%), 8 aberrant data (0.03%), 472 data entry errors (0.85%) and to save 2,800 € (US $4,072) when sent to 170 subjects.

Conclusion

The web-based socio-demographic and economic questionnaire provided information of similar-to-superior quality compared to the traditional paper version, with substantial logistic and cost advantages.

Keywords

Internet Socio-economical status Epidemiology Web-based questionnaire

Copyright information

© Swiss School of Public Health 2011