Randomized Controlled Trials (Experimental Studies)
one group of people while withholding it from others (equipoise). This limits the types of questions that can be answered using experimental studies. A placebo-controlled randomized trial might compare the effect of vitamin E supplement in one group of schizophrenia patients (the treatment group) against the effects of a placebo
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Curriculum Vitae Nigel Stuart, MBA, BS(Civ Eng)
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