Cancer - 1 Answers
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In any (legitimate) statistical study of the efficacy of a treatment or drug, the people conducting the study will examine two or more "populations". If you give 100 men (for example) an extract of Saw Palmetto to see if it helps treat or prevent prostate cancer, then you compare your data with a "control" group of 100 very similar men who are NOT getting the extract. Otherwise you have no way to tell whether the extract you are testing had any effect at all.
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