Leading Causes of Death
Note: The coding of mortality data changed significantly in 1999, so you may not be able to compare number of deaths and death rates from 1998 and before with data from 1999 and after. Also, cause-of-injury groupings were updated in 2003, which may affect some WISQARS mortality reports. Learn more >>
The National Center for Health Statistics (NCHS) in an agreement with the National Association of Public Health Statistics and Information Systems (NAPHSIS) has implemented a new, more restrictive rule for reporting National Vital Statistics System (NVSS) state- and county-level death data for years 2008 and later, in order to avoid inadvertent disclosure of cases. Therefore, the National Center for Injury Prevention and Control (NCIPC) has modified WISQARS to accommodate the new data suppression rule; i.e., no figure, including totals, should be less than 10 in tabulations for sub-national geographic areas, regardless of the number of years combined with the 2008 and later data. Tabulations, charts, and maps produced by WISQARS using only NVSS death data for years prior to 2008 are not affected by this new rule.
- Page last reviewed: December 18, 2015
- Page last updated: December 18, 2015
- Content source:
- Content source: Centers for Disease Control and Prevention, National Center for Injury Prevention and Control