Funnel effect

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Dear friends

I would like to mention few important aspects in relation to recruitment and retention of participants in clinical trials. We also need to consider recruitment of participants require pre-screening to make sure that they fit as per study criteria but screening has to be done after informed consent.

Now we will discuss about funnel effect.

FUNNEL EFFECT:

There is an almost invariable phenomenon called the ‘funnel effect’, whereby a likelihood of potential subjects who are contacted about entering a clinical trial becomes progressively smaller as it passes through successive screens and the informed consent process. The funnel effect illustrates the progressive shrinking of the patient population prior to enrolling in a trial.

Regards

Tarun Wadhwa

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