Using postal randomization to replace telephone randomization had no significant effect on recruitment of patients

S. D. Brealey, C. Atwell, S. Bryan, S. Coulton, H. Cox, B. Cross, F. Fylan, A. M. Garratt, Fiona Jane Gilbert, Maureen Grace Charles Gillan, M. Hendry, K. Hood, H. Houston, David King, Veronica Morton, Jo Orchard, Michael Robling, I. T. Russell, D. J. Torgerson, Valerie WadsworthC. Wilkinson

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6 Citations (Scopus)

Abstract

Objective: To test the effect of postal randomization on recruitment of patients into a randomized trial in primary care.

Study Design and Setting: General practices used a telephone service to randomize patients in our trial. Delays in the start of recruitment at some sites led us to modify the randomization procedure. When new practices took part patients completed and posted baseline materials to the Trial Secretary in York who performed the randomization and informed those concerned of the allocation.

Results: Of the 647 practices who were invited to take part, 130 (45%) of 288 agreed to participate using telephone randomization and 155 (43%) of 359 using the postal method. These practices recruited 553 patients from November 2002 to October 2004 across 11 sites in the United Kingdom. The postal method reduced the number of patients recruited by a factor of 0.86 (95% confidence interval = 0.62-1.20), or 14%. The number of general practitioners working in a practice significantly increased patient recruitment by a factor of 1.12 (1.05-1.20), whereas practice distance from hospital significantly decreased recruitment by a factor of 0.98 (0.97-0.99).

Conclusion: Postal randomization had no significant effect on recruitment of patients into our trial. (C) 2007 Elsevier Inc. All rights reserved.

Original languageEnglish
Pages (from-to)1046-1051
Number of pages6
JournalJournal of Clinical Epidemiology
Volume60
Issue number10
DOIs
Publication statusPublished - Oct 2007

Keywords

  • patient recruitment
  • family practice
  • randomized controlled trial
  • magnetic resonance imaging
  • internal derangement of the knee
  • negative binomial regression
  • primary-care
  • clinical-trials
  • general-practice
  • knee
  • arthroscopy

Cite this

Brealey, S. D., Atwell, C., Bryan, S., Coulton, S., Cox, H., Cross, B., Fylan, F., Garratt, A. M., Gilbert, F. J., Gillan, M. G. C., Hendry, M., Hood, K., Houston, H., King, D., Morton, V., Orchard, J., Robling, M., Russell, I. T., Torgerson, D. J., ... Wilkinson, C. (2007). Using postal randomization to replace telephone randomization had no significant effect on recruitment of patients. Journal of Clinical Epidemiology, 60(10), 1046-1051. https://doi.org/10.1016/j.jclinepi.2007.04.003