Reduce emergency department visits for nonfatal injuries — IVP‑02 Data Methodology and Measurement

NEISS does not use ICD codes. However, reporters are given extensive training and report any injury cases in the emergency department record. Data by race are not reported because multiple race data are not typically available from the emergency department records. Emergency department visit rates are calculated using the new bridged-race postcensal population estimates of the resident population of the United States for the data year involved. For census years (e.g., 2010), population counts enumerated as of April 1 are used. For all other years, population estimates as of July 1 are used. Intercensal population estimates are used in rate calculations for the years between censuses (e.g., 1991–1999, 2001–2009). Please note that postcensal population estimates for years after the last census year are updated annually, which means that rates prior to the update may be different.