What Is Cluster Randomized Trial. Jul 11 2012 A cluster randomised controlled trial study design was used. Jul 14 2017 Cluster randomised trials CRTs involve randomisation of groups clusters of individuals to control or intervention conditions.
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1 The CRT design is commonly used to evaluate non-drug interventions such as policy and service delivery interventions. Cluster Randomized Implementation Trials A cluster-randomized implementation trial does not randomly assign at the individual-level but rather by group eg clinical practices or hospital sites. Cluster randomized controlled trial RCT in which groups or clusters of individuals rather than individuals themselves are randomized are increasingly common.
Practices were randomly assigned to a stratified approach to care intervention or usual care control.
There has been a surge in the use of the stepped-wedge design for both service delivery and policy evaluations. Using the STarTBack screening tool adults with acute LBP were screened low medium and high-risk. Cluster randomized trials CRTs differ from individually randomized RCTs in that the unit of randomization is something other than the individual participant or patient. Such groups might include schools clinics worksites communities or other units.
