Underestimation of Liver-Related Mortality in the United States
A partir de données de diverses sources, dont le registre national des décès, cette étude met à jour les données de mortalité par cancer du foie aux Etats-Unis, sur la période 1979-2008
According to the National Center for Health Statistics (NCHS), “chronic liver disease and cirrhosis” is the 12 th -leading cause of death in the United States (US). However, this single descriptor might not adequately enumerate all deaths from liver disease. The aim of our study was to update data on liver mortality in the US. Mortality data were obtained from the Rochester Epidemiology Project (REP; 1999–2008) and the National Death Registry (1979–2008). Liver-specific mortality values were calculated. In contrast to the narrow NCHS definition, updated liver-related causes of death included other specific liver diagnoses (e.g. hepatorenal syndrome), viral hepatitis, and hepatobiliary cancers. The REP database contained information on 261 liver-related deaths, with an age- and sex-adjusted death rate of 27.0/100,000 persons (95% confidence interval, 23.7–30.3). Of these, only 71 deaths (27.2%) would have been captured by the NCHS definition. Of cases for which viral hepatitis or hepatobiliary cancer was the cause of death, 96.9% and 94.3% had liver-related immediate causes of death, respectively. In analysis of data from the National Death registry (2008), use of the updated definition increased liver mortality by more than 2-fold (from 11.7 to 25.7 deaths/100,000, respectively). Using NCHS definitions, liver-related deaths decreased from 18.9/100,000 in 1979 to 11.7/100,000 in 2008—a reduction of 38%. However, using the updated estimate, liver-related deaths persons were essentially unchanged from 1979 (25.8/100,000) to 2008 (25.7/100,000). Mortality burden was systematically underestimated among non-whites and persons of Hispanic ethnicity. Based on analyses of the REP and National Death databases, liver-related mortality has been underestimated over the past 2 decades in the US.
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