Eldridge, Sandra, Kerry, Sally and Torgerson, David J. orcid.org/0000-0002-1667-4275 (2009) Bias in identifying and recruiting participants in cluster randomised trials: what can be done? British Medical Journal. b4006. -. ISSN 1756-1833
Abstract
(Summary Points) . Poor design of cluster trials risks bias in selection of participants. . Ideally participants should be identified before the cluster is randomised. . When this is not possible recruitment should be by someone masked to the cluster allocation. . Statistical solutions to selection bias are less satisfactory than design solutions. . Cluster trials need to report cluster sizes to enable the readers to ascertain any differences in recruitment between treatment groups.
Metadata
Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2009 BMJ Publishing Group. This is an author produced version of a paper published in the BMJ. Uploaded in accordance with the publisher's self archiving policy. |
Keywords: | PRIMARY-CARE, GENERAL-PRACTITIONERS, SELECTION BIAS, PREVENTION, INTERVENTION, BEHAVIOR, RISK |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Health Sciences (York) |
Depositing User: | Repository Administrator York |
Date Deposited: | 10 Nov 2009 15:32 |
Last Modified: | 16 Dec 2023 00:06 |
Published Version: | https://doi.org/10.1136/bmj.b4006 |
Status: | Published |
Refereed: | Yes |
Identification Number: | https://doi.org/10.1136/bmj.b4006 |
Related URLs: |
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