Experimental Design: Fallacy of “Before-After” Comparisons in Uncontrolled Studies
The design of an experiment is defined as the method by which subjects (experimental units) are assigned to treatments. The chosen method of assignment in turn determines the way in which the data collected in the study are analyzed.
KeywordsAmyotrophic Lateral Sclerosis Experimental Treatment Allergic Rhinitis Plasma Cholesterol Placebo Effect
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