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Clinical Trials are the last stage of a long and expensive new drug development

Today, our main reasons for running clinical trials are to make sure that our drug
Is safe to give to patients
Actually does what we claim
A pharmaceutical…

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Placebo: If we want to know how well our drug works we must compare it to an
inactive drug, placebo. This is important because our expectations can lead to real
results e.g., if a doctor gives a group of patients tablets and tells them it will cure
their headache, a…

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we calculate an average (mean) value and also get an idea of how varied the results
are (error), shown in the following graph as whiskers' above and below each mean
value. In this study, we can see that our test drug (solid line) is better at reducing
pain (lower pain…


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