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Reducing questionnaire length did not improve physician response rate: a randomized trial.

Eva E Bolt1, Agnes van der Heide2, Bregje D Onwuteaka-Philipsen1

  • 1VU University Medical Center, Department of Public and Occupational Health and EMGO Institute for Health and Care Research, VUmc Expertise Center for Palliative Care, Van der Boechorstraat 7, 1081 BT Amsterdam, The Netherlands.

Journal of Clinical Epidemiology
|December 3, 2013
PubMed
Summary

Reducing physician survey questionnaire length did not significantly improve initial response rates. However, sending a drastically shortened version to nonresponders increased the overall response rate, suggesting a strategy for enhanced data collection in medical research.

Keywords:
Data collectionHealth-care surveysPhysician surveysQuestionnaire designQuestionnaire lengthResponse rate

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Area of Science:

  • Medical Research Methodology
  • Survey Science
  • Healthcare Management

Background:

  • Physician surveys are crucial for gathering data on clinical practices and decision-making.
  • Low response rates in physician surveys can introduce bias and limit the generalizability of findings.
  • Optimizing survey design is essential for maximizing participation in medical research.

Purpose of the Study:

  • To investigate the impact of questionnaire length on physician response rates in a survey.
  • To determine if shortening a survey instrument enhances participation among medical professionals.

Main Methods:

  • A postal survey on end-of-life decision making was distributed to general practitioners, elderly care physicians, and medical specialists.
  • Two groups of medical specialists received questionnaires of differing lengths (four vs. two double pages).
  • Nonresponders were sent progressively shorter versions of the questionnaire, including a one double-page version.

Main Results:

  • The response rate for medical specialists was similar for both the four and two double-page questionnaires.
  • The overall response rate increased from 53% to 64% after sending a one double-page questionnaire to nonresponders.
  • A total of 1,456 out of 2,269 eligible physicians responded to the survey.

Conclusions:

  • Reducing questionnaire length in physician surveys does not consistently improve initial response rates.
  • A significantly shortened questionnaire sent to nonresponders can effectively increase overall survey participation.
  • This strategy offers a practical approach to enhance data collection in medical surveys.