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Multi-arm experiment

A multi-arm experiment simultaneously compares three or more treatment or intervention conditions — each called an arm — against a shared control or against one another. By testing multiple alternatives in a single study, it yields more information per participant than running separate two-group experiments sequentially, while controlling the overall Type I error rate through pre-specified comparison strategies.

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Multi-Arm Experimental Design

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Taxonomic bucketAdaptive Experimentmachine-suggested · Relational suggestion, not evidence.Taxonomic bucketCluster Randomized Controlled Trialmachine-suggested · Relational suggestion, not evidence.Taxonomic bucketCrossover Randomized Controlled Trialmachine-suggested · Relational suggestion, not evidence.Taxonomic bucketFactorial Experimentmachine-suggested · Relational suggestion, not evidence.Used in the same domainRandomized Controlled Trialmachine-suggested · Relational suggestion, not evidence.