Cocaine use is common in the United States. The National Survey on Drug Use and Health reported that in 2010 an estimated 0.6% of Americans aged 12 or older (i.e., one million people) used cocaine within the prior month (Substance Abuse and Mental Health Services Administration, 2011]. Cocaine dependence (CD) is associated with serious social, legal, medical, and psychiatric problems and thus represents a major public health problem in the United States.
