Mortality among Patients with Chronic Hepatitis B (CHB) Infection: the Chronic Hepatitis Cohort Study (CHeCS).

Background According to death certificates, approximately 1800 persons die from hepatitis B annually in the United States; however, this figure may underestimate true mortality from chronic hepatitis B (CHB). Methods We analyzed data from CHB patients seen in the Chronic Hepatitis Cohort Study (CHeCS) between 1 January 2006 and 31 December 2013. We compared overall and cause-specific death rates and mean ages at death between CHeCS CHB decedents and U.S. decedents from the Multiple Cause of Death (MCOD) file. Results Of 4389 CHB patients followed for a mean of 5.38 years, 492 (11%) CHB patients died after a mean follow-up of 3.00 years. Compared to survivors, decedents were older, more likely to be White (40.6%), African-American (27.1%), or male (74.2%); and more likely to have had cirrhosis (59.8%), diabetes (27.2%), alcohol abuse (17.7%), hepatocellular carcinoma (17.5%), or a liver transplant (5.7%); whereas survivors were more likely to be Asian (48.8%; all P < .001). CHB patients died at an average age of 59.8 years14 years younger than the general U.S. populationand at higher rates for all causes (relative risk [RR] = 1.85, 95% confidence interval [CI], 1.851-1.857) and liver-related causes (RR = 15.91, 95% CI, 15.81-16.01). Only 19% of CHB decedents and 40% of those dying of liver disease had hepatitis B reported on their death certificates. Conclusions Compared to the general population, CHB patients die at younger ages and higher rates from all causes and liver-related causes. Death certificates underrepresent the true mortality from CHB. Half of decedents with chronic hepatitis B (CHB) died of liver-related causes, at an average age of 60 years. Despite this, only 40% of CHB decedents dying with liver disease had hepatitis B reported on the death certificate.