Selection bias and subject refusal in a cluster-randomized controlled trial
Abstract Background Selection bias and non-participation bias are major methodological concerns which impact external validity. Cluster-randomized controlled trials are especially prone to selection bias as it is impractical to blind clusters to their allocation into intervention or control. This st...
Main Authors: | Rochelle Yang, Barry L. Carter, Tyler H. Gums, Brian M. Gryzlak, Yinghui Xu, Barcey T. Levy |
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Format: | Article |
Language: | English |
Published: |
BMC
2017-07-01
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Series: | BMC Medical Research Methodology |
Subjects: | |
Online Access: | http://link.springer.com/article/10.1186/s12874-017-0368-7 |
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