nutrition+research+lecture+guide

nutrition+research+lecture+guide - Weekof11April2011 1...

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Validity of Nutrition Research Week of 11 April 2011 1. Experimental Research (also known as Human Intervention Research) Exposure: Outcome: Control: In a typical experimental design, subjects are ___________ assigned different conditions in order to establish a relationship between an exposure and outcome. What is the purpose of randomization? What are the components of a good experiment? o 1. o 2. o 3. 2. Ethical Issues and Biases in Experimental Research Experimental research allows us to see if exposure to a specific condition (variable) causes an outcome. However, even randomized clinical trials (human intervention research) are not perfect. Explain some potential weaknesses in experimental research.
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