http://www.sciencealert.com/80-of-the-data-in-chinese-clinical-trial-is-fabricatedA Chinese government investigation has revealed that more than 80 percent of the data used in clinical trials of new pharmaceutical drugs have been "fabricated".
The report uncovered fraudulent behaviour at almost every level, and showed that some pharmaceutical companies had hidden or deleted records of potentially adverse side effects, and tampered with data that didn't meet their desired outcomes.