The unfortunate thing about statistics is that you can build any number of false claims on top of perfectly valid data as long as you present your data in a specific order. I'm surprised the rate isn't far higher. I myself have been asked before to present certain data sets in a way which makes them appear more positive than they really are. I've also been asked to emphasize correlations of questionable quality merely to show the hypothesis as more solid than it otherwise would be. No one has ever asked me to outright falsify data, though.
The problem with these inquiries is that normally they can't be denied on a factual basis. Many times, you're not actually committing fraud, that is, you're not saying something that's patently untrue. Presenting the truth in a specific order isn't illegal, and if it was, then all media organizations would go under in a matter of hours. In the end, statistics, particularly statistical models, are dubious science at best. It's never a good idea to lay too much faith on statistical models, especially ones presented by people with a direct interest in saying a specific idea. The underlying facts are often correct while the conclusions are nothing but sometimes educated and usually heavily biased opinion.