References: Reducing Sample Sizes When Comparing Experimental and Control Groups

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References

Cohen J. The t test for means: Statistical power analysis for the behavioral sciences Academic New York 1969
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Cochran W. G. Cox G. M. Methods for increasing the accuracy o f experiments: Experimental designs Wiley New York 1957
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Chalmers T. C. Block J. B. Lee S. Controlled studies in clinical cancer research N Engl J Med 1972 287 75 78
PubMed Web of Science ®Google Scholar

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