Correction to: Neuropsychopharmacology (2005) 30, 1005–1017. doi:10.1038/sj.npp.1300681.

Following the publication of this article, the authors noted the following error: in the Abstract, it is stated incorrectly that 21–25 year olds are at excess risk of developing cocaine dependence soon after first use. The text and tables reflect correctly that 21–25 year olds are less likely to become cocaine dependent compared to 18–20 year olds.