Changes to This Summary (03/15/2013)

The PDQ cancer information summaries are reviewed regularly and updated as new information becomes available. This section describes the latest changes made to this summary as of the date above.

Significance

Added 2012 Centers for Disease Control and Prevention as reference 2.

Added text to state that from 2000 to 2011, significant declines occurred in the use of cigarettes among middle school (10.7% to 4.3%) and high school (27.9% to 15.8%) students (cited 2013 Centers for Disease Control and Prevention as reference 12 and 2012 Centers for Disease Control and Prevention as reference 13).

This summary is written and maintained by the PDQ Screening and Prevention Editorial Board, which is editorially independent of NCI. The summary reflects an independent review of the literature and does not represent a policy statement of NCI or NIH. More information about summary policies and the role of the PDQ Editorial Boards in maintaining the PDQ summaries can be found on the About This PDQ Summary and PDQ NCI's Comprehensive Cancer Database pages.