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zebra4o1

08/14/08 4:27 PM

#19917 RE: neuroinv #19916

This huge delay in releasing the RD1 results does make you wonder if they had to make last minute changes. Really hard to understand how data analysis can take so long with such a small number of patients. The 'paper-forms-take-longer' excuse doesn't seem very plausible.
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gfp927z

08/14/08 5:11 PM

#19919 RE: neuroinv #19916

Neuro, Thanks. Well, in the 5+ years I've been following good ole COR, nothing has ever gone smoothly. As a famous scholar once said of world history - 'it's just one damn thing after another' :o)




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justsotb

08/14/08 8:57 PM

#19924 RE: neuroinv #19916

Neuro, you indicated that analyzing completers is not statistically appropriate. It would be reasonable for a proof-of-concept (POC) study and treatment-validating results would be worth publishing.

One could think of an intent-to-treat (ITT) analysis as estimating how well a marketed treatment might work (on average, due to compliance, etc), which is preferable for a phase-3 confirmatory study. Similarly, a per-protocol (PP) analysis more accurately estimates the actual treatment effect and justifies putting resources into additional studies.

The PP analysis does not necessarily have to be so strict as to analyze completers only, but could be limited to subjects for whom the study protocol was reasonably followed. Procedural problems that substantially lowered the reliability of a given subject’s results could be justification for excluding such a subject from a PP analysis. Respectively, sotb.