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Published on in Vol 12 (2026)

Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/89761, first published .
Woman filling out an online survey on a computer screen, with fields for personal details and deployment questions.

Factors Influencing Response Rates in National Internet-Based Questionnaires: Analysis of a Large National Survey

Factors Influencing Response Rates in National Internet-Based Questionnaires: Analysis of a Large National Survey

Søren Birkeland   1, 2 , LLM, PhD ;   Anders Haakonsson   1 , MSc, PhD ;   Sören Möller   3 , MSc, PhD

1 Odense University Hospital, Open Patient data Exploratory Network (OPEN), 5000 Odense, Denmark

2 Forensic Mental Health Research Unit Middelfart (RFM), Department of Regional Health Research, University of Southern Denmark, Middelfart, Region of Southern Denmark, Denmark

3 Department of Public Health, University of Southern Denmark, Odense, South Denmark, Denmark

Corresponding Author:

  • Søren Birkeland, LLM, PhD
  • Odense University Hospital
  • Open Patient data Exploratory Network (OPEN)
  • J. B. Winsløws Vej 21, 3rd floor
  • 5000 Odense
  • Denmark
  • Phone: 45 5142 1413
  • Email: sbirkeland@health.sdu.dk