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A randomized trial found online questionnaires supplemented by postal reminders generated a cost-effective and

Amanda Loban1, Laura Mandefield1, Daniel Hind1

  • 1Clinical Trials Research Unit, University of Sheffield, Regent Court, 30 Regent Street, Sheffield S1 4DA, UK.

Journal of Clinical Epidemiology
|August 29, 2017
PubMed
Abstract

Keywords:
EDCElectronic data captureExternal validityQuestionnairesRCTsResponse ratesSurveys

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