Right from the conclusion of the article that you linked: > Patients who are using their medication for cognitive enhancement or diverting their medication to

Right from the conclusion of the article that you linked: > Patients who are using their medication for cognitive enhancement or diverting their medication to others present a high risk. I think the Standford population do not fit with the results of your study (that look at the US population in general). These people ARE using these drugs for cognitive enhancement. Now get back to the article conclusion.