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Four basic analysis of variance (ANOVA) designs are reviewed in this paper. Hypothetical examples drawn from the literature to illustrate a single factor ANOVA design, two a repeated measures ANOVA designs, and a randomized block ANOVA design. ANOVA designs provide life beyond t-tests. These ANOVA designs are not by themselves a cure-all to all research problems. By carefully considering their treatment combination options, possible confounding factors, and subject availability, an efficient clinical trial may use one of these ANOVA designs.
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A 2004 study studied this question.
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