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The qualification period

Journal of Clinical Epidemiology, 1991
For randomized trials that do not require prompt onset of therapy, a pre-admission preparation, called the qualification period, can deal with certain customary difficulties in design, analysis, and ethics. For the patients' baseline state, the qualification period can be used to "wash out" effects of previous treatment, to verify admission criteria ...
P, Knipschild   +2 more
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