Her team surveyed over 6,000 students at the University of Cincinnati, the University of South Carolina and the University of Kentucky. About 460 or 7.8 percent of those surveyed said they believed they had been drugged, while 83 or 1.4 percent reported they or someone they know had drugged another person. Swan said some students who reported being drugged confirmed it through tests. Others said they had been told by a witness that something was placed in their drink. And still others believed they had been drugged based on how they felt.