●A review of 16 key clinical trials on the subject shows that five were funded by Purdue and an OxyContin distributor, two were co-authored by Purdue employees, and two were sponsored by other drug companies making different opioids. None of the 16studies showed clear warnings about the addiction dangers or the physical dependence generated by the drugs. The low rate of addiction reported in these studies is at odds with more recent findings indicating that diagnoses of addiction are common in opioid patients.
●Internal company documents indicate that one of the key published studies sponsored by Purdue — the one reprinted 10,000 times — omitted suspected cases of withdrawal symptoms. The published paper offered assurance that only two of more than 100 OxyContin patients had withdrawal symptoms; the internal documents showed that at least 11 exhibited possible signs of withdrawal, and some experts say it is likely that at the doses given, most of the patients would have experienced withdrawal.