Parallel Study

See: Parallel Clinical Trial, Randomized Controlled Experiment, Factorial Experiment, Crossover Study, Cluster Randomized Controlled Study.

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References

2013

• http://en.wikipedia.org/wiki/Randomized_controlled_trial#By_study_design
  • Parallel-group – each participant is randomly assigned to a group, and all the participants in the group receive (or do not receive) an intervention. …

    … An analysis of the 616 RCTs indexed in PubMed during December 2006 found that 78% were parallel-group trials, 16% were crossover, 2% were split-body, 2% were cluster, and 2% were factorial.

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