An analysis of national prescribing patterns shows that more than half of patients who received an opioid prescription in 2009 had filled another opioid prescription within the previous 30 days. This report also suggested potential opportunities for intervention aimed at reducing abuse of prescription opioids. Researchers from the National Institute on Drug Abuse (NIDA), a component of the National Institutes of Health, will publish results of this analysis in this week’s Journal of the American Medical Association (JAMA).