Don't forget though that there have been important criticisms made of RCTs,
as well as attempts to broaden their base through synthesis of quantitative
and qualitative methodologies more recently.
Andrew Webster
-----Original Message-----
From: Evidence based health (EBH)
[mailto:[log in to unmask]]On Behalf Of Laurence Moore
Cardiff University
Sent: 21 March 2003 10:59
To: [log in to unmask]
Subject: Query: successful drugs
I'm trying to find a figure (and the source or reference from where it
comes) for the proportion of new drugs that successfully get through the
various phases of testing and eventually become licenced. Any ideas of what
this figure might be, or where I could find out, much appreciated.
My reason for asking is that I'm writing a paper to promote RCTs in
educational research, and want to highlight the fact that untested
interventions are more than likely to be unsuccessful interventions, and
that educationalists could learn from the clinical world, where new
interventions (drugs) cannot be implemented (licenced) unless they have
been thoroughly tested.
Many thanks
Laurence Moore
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