Drugmakers about 10 percent of the time fail to report serious adverse events to the U.S. Food and Drug Administration within the time required, according to a recent study in the Journal of the American Medical Association. We spoke to Pinar Karaca-Mandic, study co-author and associate professor of Health Policy and Management at the School of Public Health at the University of Minnesota, about the study, the concerns it raises, and whether regulators need to rethink the way adverse events are reported.