%0 Journal Article %J Substance use & misuse %D 2016 %T Comparisons of Cocaine-Only, Opioid-Only, and Users of Both Substances in the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC). %A Leeman, Robert F %A Sun, Qisi %A Bogart, Devorah %A Beseler, Cheryl L %A Sofuoglu, Mehmet %P 1-12 %R 10.3109/10826084.2015.1122063 %X Cocaine and opioid co-use is a notable public health concern, but little is known about correlates of this behavior. Most prior findings come from treatment samples and concern cocaine and heroin. Findings from a nationally representative sample involving primarily prescription opioid misuse would expand knowledge. %8 2016 Mar 22