[La1n]

If they target a CRO the sponsor still has the original data from the trial sites. I can say that at least for the company (one of the 10 largest pharmaceutical companies) I work for this would almost be impossible to not be caught.

[Icathian]

Even the crappy little cowboy CRO I worked for had a fleet of CRA's go out and manually verify documents against the EDC. It's required by law. I think the FDA audit also repeats that process with a random sampling for some studies, though I couldn't swear to that.

I get the point the parent comment was trying to make, but yeah, bad example.