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

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.

journal_name

J Clin Epidemiol

journal_title

Journal of clinical epidemiology

authors

Brealey SD,Atwell C,Bryan S,Coulton S,Cox H,Cross B,Fylan F,Garratt A,Gilbert FJ,Gillan MG,Hendry M,Hood K,Houston H,King D,Morton V,Orchard J,Robling M,Russell IT,Torgerson D,Wadsworth V,Wilkinson C

doi

10.1016/j.jclinepi.2007.04.003

subject

Has Abstract

pub_date

2007-10-01 00:00:00

pages

1046-51

issue

10

eissn

0895-4356

issn

1878-5921

pii

S0895-4356(07)00122-9

journal_volume

60

pub_type

杂志文章,多中心研究

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