The Single Arm Studies and What are the Alternatives?
The Effective Statistician - in association with PSI
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The Problem With Comparative Data in RCTs
If your trial is going to be enormously big if you have to include a very heterogeneous patient population, then the discussion has to be not around how can we minimize costs. The point is, which questions can only be answered by comparative data and which questions can we potentially answer by a different approach? And there are many options; few of them are discussed because at the moment, it is pretty much the thinking that if you go observational, then we do that in phase four.
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