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Figure 1.  Age-Adjusted Hepatitis B–Listed Death Rates in 50 States and the District of Columbia, Segmented by Department of Health and Human Services Regions, United States, 2010-2019a
Age-Adjusted Hepatitis B–Listed Death Rates in 50 States and the District of Columbia, Segmented by Department of Health and Human Services Regions, United States, 2010-2019a

Data are shown by decedent residence in the US states and the District of Columbia. Data Source: 2010-2019 US Multiple Cause of Death data, National Vital Statistics System.

aThe hepatitis B–listed death rate for the United States in 2010 to 2019 was 0.47 (95% CI, 0.46–0.48) deaths per 100 000 population.

bSignificantly younger median age at hepatitis B–listed death than the median age at hepatitis B–listed death for the United States (60.0 years).

cSignificantly older median age at hepatitis B–listed death than the median age at hepatitis B–listed death for the United States.

dRates where death counts were fewer than 20 are considered statistically unstable.

Figure 2.  Distribution of US Birthplace Status Among Hepatitis B–Listed Deaths, United States, 2010-2019
Distribution of US Birthplace Status Among Hepatitis B–Listed Deaths, United States, 2010-2019

Data Source: 2010-2019 US Multiple Cause of Death data, National Vital Statistics System. US birthplace data for Alabama, Delaware, Montana, New Hampshire, North Dakota, South Dakota, Vermont, West Virginia, and Wyoming were not displayed because at least 1 cell (either US-born or non-US–born) had fewer than 10 deaths. Missing values were not included in calculations.

aStatistically different based on the 95% CI of the proportion of hepatitis B–listed deaths for each state compared with the national distribution.

Table 1.  Hepatitis B–Listed Deaths by State of Residence in the United States, 2000 to 2009 and 2010 to 2019a
Hepatitis B–Listed Deaths by State of Residence in the United States, 2000 to 2009 and 2010 to 2019a
Table 2.  Distribution of Sociodemographic Characteristics, Age at Death, and Underlying Cause of Death by Birthplace of Decedents With Hepatitis B–Listed Deaths, United States, 2010-2019a
Distribution of Sociodemographic Characteristics, Age at Death, and Underlying Cause of Death by Birthplace of Decedents With Hepatitis B–Listed Deaths, United States, 2010-2019a
Table 3.  Median Age at Death Among Decedents With and Without Hepatitis B–Listed Deaths, United States, 2010-2019a
Median Age at Death Among Decedents With and Without Hepatitis B–Listed Deaths, United States, 2010-2019a
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Original Investigation
Public Health
June 28, 2022

Regional Differences in Mortality Rates and Characteristics of Decedents With Hepatitis B Listed as a Cause of Death, United States, 2000-2019

Author Affiliations
  • 1Division of Viral Hepatitis, National Center for HIV, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
JAMA Netw Open. 2022;5(6):e2219170. doi:10.1001/jamanetworkopen.2022.19170
Key Points

Question  Were there regional differences in mortality rates and characteristics among decedents with hepatitis B listed as a cause of death in the US during 2000 to 2019?

Findings  In this nationwide cross-sectional study including 35 280 decedents from 2000 to 2019, the highest hepatitis B–listed death rates were observed in coastal and Appalachian states; in addition, younger median age at death occurred predominantly in Appalachian states. Most decedents, regardless of birthplace, had liver-related conditions listed as underlying cause of death, and decedents born in the US, who constituted approximately two-thirds of all deaths, more frequently had nonliver conditions listed as underlying cause of death compared with non-US–born decedents.

Meaning  These findings suggest that in addition to addressing liver-related complications, US-born persons with chronic infection may also require diagnosis and management of multiple comorbidities.

Abstract

Importance  US hepatitis B mortality has been described nationally, but examination subnationally may identify differences in mortality rates and decedent characteristics, including birthplace.

Objective  To examine characteristics of decedents with hepatitis B–listed deaths during 2010 to 2019 and compare age-adjusted hepatitis B–listed death rates during 2010 to 2019 vs 2000 to 2009.

Design, Setting, and Participants  This cross-sectional study used Multiple Cause of Death data from 50 US states and the District of Columbia (DC) from 2000 to 2019 to assess characteristics of US residents with hepatitis B listed as an underlying cause of death (UCOD) or contributing cause of death on death certificates. Data were analyzed from September 2019 to May 2022.

Exposures  Hepatitis B listed as underlying or contributing cause of death.

Main Outcomes and Measures  Outcomes of interest were hepatitis B–listed death counts, age-adjusted rates, and characteristics of decedents during 2000 to 2019. The distribution of hepatitis B–listed deaths according to sociodemographic characteristics and UCOD among US- and non-US–born decedents were also examined.

Results  A total of 35 280 decedents with hepatitis B listed as the cause of death were identified, including 17 483 deaths during 2010 to 2019. Decedents were 63.3% US-born, and 25.8% of decedents were Asian or Pacific Islander and 46.5% of decedents were White; 28.4% of decedents were listed as having hepatitis C virus (HCV) or HIV coinfection. State-level rates significantly surpassed the overall US rate (0.47 deaths per 100 000 population) in DC (high, 1.78 deaths per 100 000 population), Hawaii, Oklahoma, California, Tennessee, West Virginia, Mississippi, Oregon, Washington, Louisiana, Kentucky, and New York (low, 0.61 deaths per 100 000 population). Median (IQR) age at hepatitis B death was significantly younger in Kentucky (54.0 [46.0-64.0] years), West Virginia (56.0 [47.0-65.0] years), Tennessee (57.0 [50.0-65.0] years), Mississippi (58.0 [50.0-65.0] years), and Ohio (59.0 [50.0-66.0] years) than the national median (60.0 [53.0-69.0] years), which itself was significantly younger than nonhepatitis B–listed deaths (77 [63.0-87.0] years; P < .001). Hepatitis B was the UCOD among approximately 30% of US- and non-US–born decedents with hepatitis B COD. Irrespective of birthplace, most decedents had liver-related UCOD. Compared with non-US–born decedents, US-born decedents more frequently had nonliver conditions listed as UCOD. Liver cancer was the predominant UCOD among non-US–born decedents (37.9% of decedents). From 2000 to 2009 compared with 2010 to 2019, the hepatitis B–listed mortality rate significantly decreased nationally (change, −18.97%) and in 14 states; significant increases were observed in West Virginia (change, 83.78%) and Kentucky (change, 69.44%).

Conclusions and Relevance  These findings suggest that US-born decedents constituted two-thirds of all hepatitis B–listed deaths and median age at death was youngest in Appalachian states. Irrespective of birthplace, most decedents had liver-related UCOD; however, US-born decedents more frequently had nonliver UCOD than non-US–born decedents. In addition to addressing liver-related complications, US-born persons with chronic infection may also require diagnosis and management of multiple comorbidities.

Introduction

Chronic hepatitis B can lead to cirrhosis and hepatocellular carcinoma, resulting in premature death. In addition to increased mortality from liver-related causes, chronic hepatitis B has been associated with premature mortality and elevated mortality rates from all causes.1-4 Elevated mortality and premature death among persons with chronic hepatitis B has been associated with coinfection with hepatitis C virus (HCV), HIV, or hepatitis D virus (HDV), diabetes, metabolic syndrome, alcohol use disorder, and smoking.5-11

National hepatitis B death rates were relatively constant during 1999 to 2019 and highest among decedents aged 55 years and older, non-Hispanic Asian and Pacific Islander persons, and men.12,13 Annual national viral hepatitis surveillance reports have included hepatitis B mortality estimates since 2004, displaying state-level data since 2015.13 However, these reports lacked information on decedent place of birth, comorbidities, and underlying vs contributing causes of death. In 2019, states with the highest hepatitis B–listed death rates included Hawaii, Oklahoma, Tennessee, and Oregon. US Multiple Cause of Death (MCOD) data are compiled from all US-registered deaths that are housed in each state’s vital registration office. Demographic information, such as state of residence, US- vs non-US birthplace, age, race and ethnicity, and sex are available in MCOD data and are highly complete.

In 2021, the Department of Health and Human Services (DHHS) published a national strategy for eliminating hepatitis B as a public health threat in the United States.14 The plan described core indicators to measure progress, including a 65% reduction in the rate of hepatitis B deaths by 2030. One specific goal of the plan was to “improve public health surveillance through data collection, case reporting, and investigation at the national, state, tribal, local, and territorial health department levels.”14 State and local health departments were encouraged to develop chronic hepatitis B surveillance programs, including understanding hepatitis B mortality in their jurisdiction, and to prioritize activities according to the needs of the populations they serve.

Accordingly, we examined MCOD data for decedents with hepatitis B listed as an underlying or contributing COD during 2000 to 2019 to understand subnational variability in death counts and rates, characteristics of decedents (eg, US- vs non-US birthplace and coinfection status), and changes in death rates. Recent US hepatitis B prevalence estimates reported higher numbers and rates of chronic hepatitis B among non-US–born persons compared with those born in the US.15,16 In the most recent analysis of the National Health and Nutrition Examination Survey, persons of Asian descent constituted 69.7% of chronic hepatitis B cases.15 Compared with US-born persons, non-US–born persons typically acquire infection earlier in life, which can affect clinical outcomes, including a 25% lifetime risk of premature mortality from liver failure or liver cancer.17-19 We surmised that, compared with US-born decedents, more non-US–born decedents would have hepatitis B listed as the underlying COD (UCOD). To further explore differences between US- and non-US–born decedents with hepatitis B–listed deaths, we examined the distribution of these deaths by sociodemographic characteristics, median age at death, and UCOD.

Methods

This cross-sectional study was deemed exempt from institutional review board review and informed consent because all data were obtained from secondary sources without personally identifiable information, per HHS Code of Federal Regulations Title 45 Part 46 2018. This study was reported according to the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) reporting guideline.

Data Source

This study used restricted-use US MCOD data that were acquired through approval of a project determination to the Centers for Disease Control and Prevention National Center for Health Statistics (NCHS) research review committee to obtain information on decedent state of residence and US birthplace status.20 Through the National Vital Statistics program, NCHS compiles death certificate information from state vital statistics offices to produce national MCOD data.

Definitions

Region- and state-level hepatitis B–listed deaths included decedents whose residence was in the 50 US states and the District of Columbia (DC). Regions were grouped according to the assignments under the 10 DHHS regional offices.21

We defined hepatitis B–listed deaths through International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10)22 COD codes if at least 1 code indicative of hepatitis B (ie, B16, B17.0, B18.0, and B18.1) was listed as the UCOD or a contributing COD (CCOD) in the record axis fields. We captured the UCODs and all CCODs to ensure completeness.2,23,24 If a decedent had hepatitis B listed as a COD, we looked for evidence of coinfection with HCV (B17.1 and B18.2), HIV (B20-B24), and HDV (B16.0, B16.1, B17.0, and B18.0) present as any COD. A US-born decedent was defined as a birth in the 50 states or DC. A non-US–born decedent was defined as a birth in any country outside of the United States.

Statistical Analysis

Hepatitis B–listed death counts were enumerated by aggregating data into two 10-year time intervals (2000-2009 and 2010-2019) to improve reliability of state-level measures. Hepatitis B–listed death rates in 2000 to 2009 and 2010 to 2019 were calculated by dividing the number of hepatitis B–listed deaths in a state of residence and time period by the equivalent Census population. Death rates were adjusted to the age distribution of the 2000 US standard population using the direct method. To estimate the variance of age-adjusted death rates, 95% CIs were calculated based on a γ distribution, as developed by Fay and Feuer.25 To examine variability in rates during 2010 to 2019, we derived death rate ratios (DRRs) to compare hepatitis B–listed death rates in DHHS regions and states to that of the United States as a whole, denoted by DRR = (RateRegion or RateState)/RateUS). Z-score P values were examined to determine if differences in death rates were statistically significant for each region and state compared with the United States and 2010 to 2019 compared with 2000 to 2009. We were unable to calculate hepatitis B–listed death rates by US birthplace status owing to lack of such information in the US Census population data sets. Race and ethnicity information is reported by the funeral director by questioning the decedent’s next of kin or direct observation (including Hispanic, non-Hispanic American Indian or Alaska Native, non-Hispanic Asian or Pacific Islander, non-Hispanic Black, and non-Hispanic White).26 Race and ethnicity data were included to describe race and ethnicity disparities by overall, US birthplace status, and coinfection status.

Median age at hepatitis B–listed death, distribution of the status of US birthplace, and HCV, HIV, or HDV coinfection during 2010 to 2019 were examined by state. The Kruskal-Wallis test was used to assess statistically significant differences in median age at hepatitis B–listed death for each region and state relative to the median age at hepatitis B–listed death for the United States. The Pearson χ2 test and 95% CIs of proportions were used to determine significant differences in the proportion of hepatitis B–listed deaths among US-born and non-US–born individuals and who had HCV, HIV, or HDV coinfection listed and did not have coinfection listed for each state relative to that proportion of hepatitis B–listed deaths for the United States.

We determined whether there were differences according to US vs non-US birth status by examining the distribution and median age of hepatitis B–listed deaths by sociodemographic and UCOD categories during 2010 to 2019. Among decedents for whom hepatitis B was not listed as the UCOD (ie, hepatitis B instead was listed as a CCOD), we classified the UCOD into 15 broader categories (eTable in the Supplement). Finally, we compared the median age at death of decedents without hepatitis B listed as a COD to the median age at death of US-born and non-US–born decedents with hepatitis B COD by UCOD categories.

We followed NCHS’s policy regarding decedent confidentiality; therefore, we did not display or interpret any subnational results where counts were fewer than 10 deaths. All mortality rates are expressed per 100 000 population. To control for type I errors arising from multiple comparisons, we adjusted P values using the step-down Bonferroni method of Holm for any comparisons of state or region with the United States during 2010 to 2019 and rates for any region or state from 2010 to 2019 vs 2000 to 2009.27 All P values were 2-sided, and we considered P < .05 statistically significant. Statistical analyses were performed using SAS software, version 9.4 (SAS Institute) and the map was generated using R Studio, version 1.3.1056 (R Project for Statistical Computing). Data were analyzed from September 2019 to May 2022.

Results
Hepatitis B–Listed Deaths During 2010-2019

From 2000 to 2019, there were 35 280 decedents with hepatitis B listed as the cause of death, including 17 797 deaths from 2000 to 2009 (age-adjusted rate, 0.58 [95% CI, 0.58-0.59] deaths per 100 000 population) and 17 483 deaths from 2010 to 2019 (age-adjusted death rate, 0.47 [95% CI, 0.46-0.48] deaths per 100 000 population) (Table 1). Hepatitis B–listed deaths were mostly among men (12 779 decedents [73.1%]), individuals aged 45 to 64 years (9605 decedents [54.9%]), individuals born during 1945 to 1965 (10 849 decedents [62.1%]), and US-born individuals (10 823 decedents [63.3%]). Approximately one-fourth of decedents (4488 decedents [25.8%]) were non-Hispanic Asian or Pacific Islander, 3312 decedents (19.1%) were among non-Hispanic Black individuals, and 8083 decedents (46.5%) were among non-Hispanic White individuals. Among hepatitis B–listed deaths, 4297 decedents (24.6%) had HCV coinfection, 961 decedents (5.5%) had HIV coinfection, and 295 decedents (1.7%) had both HCV and HIV coinfection; 6 deaths (<0.1%) included HDV infection (eFigure 1 in the Supplement).

The number of hepatitis B–listed deaths in 13 states exceeded the national mean number of all hepatitis B–listed deaths (mean [SD] 343 [550] deaths per state) (Table 1). California alone accounted for 20.4% of all hepatitis B–listed deaths, followed by New York (8.0%), Texas (8.0%), and Florida (6.2%), with more than 1000 deaths each, followed by (in descending order of death count) Ohio, Tennessee, Washington, New Jersey, Pennsylvania, Georgia, North Carolina, Oklahoma, and Michigan. The cumulative death counts in these 13 states accounted for 65.7% of all hepatitis B–listed deaths.

States in which the hepatitis B–listed death rates significantly surpassed the national hepatitis B–listed death rate included DC (high, 1.78 [95% CI, 1.47-2.14] deaths per 100 000 population), Hawaii, Oklahoma, California, Tennessee, West Virginia, Mississippi, Oregon, Washington, Louisiana, Kentucky, and New York (low, 0.61 [95% CI, 0.58-0.65] deaths per 100 000 population) (Table 1 and Figure 1). The highest death rates were concentrated in the coastal and Appalachian regions (Figure 1). The hepatitis B–listed death rate was the lowest (with respect to statistical reliability) in Montana (0.14 [95% CI, 0.08-0.23] deaths per 100 000 population) followed by Idaho (0.21 [95% CI, 0.15 to 0.29] deaths per 100 000 population), Illinois (0.21 [95% CI, 0.19 to 0.24] deaths per 100 000 population), New Hampshire (0.22 [95% CI, 0.15-0.31] deaths per 100 000 population), and Wisconsin (0.22 [95% CI, 0.19-0.26] deaths per 100 000 population).

The median (IQR) age at hepatitis B–listed death was 60.0 (53.0-69.0) years for the United States (Table 1). Significantly younger median (IQR) ages than the national median age at hepatitis B–listed death were in Kentucky (54.0 [46.0-64.0] years), West Virginia (56.0 [47.0-65.0] years), Tennessee (57.0 [50.0-65.0] years), Mississippi (58.0 [50.0-65.0] years), and Ohio (59.0 [50.0-66.0] years) (Table 1 and Figure 1). A significantly older median (IQR) age at hepatitis B–listed death was observed in California (63.0 [55.0-73.0] years).

Among hepatitis B–listed deaths, US-born decedents, compared with decedents not born in the US, were more frequently aged 45 to 64 years (59.8% [95% CI, 58.9%-60.8%] vs 45.9% [95% CI, 44.6%-47.1%]), born during 1945 to 1965 (66.3% [95% CI, 65.4%-67.2%] vs 54.4% [95% CI, 53.2%-55.7%]), non-Hispanic Black (24.7% [95% CI, 23.9%-25.5%] vs 9.1% [95% CI, 8.4%-9.8%]), non-Hispanic White (67.1% [95% CI, 66.2%-68.0%] vs 10.8% [95% CI, 10.1%-11.6%]), and listed with HCV, HIV, or HDV coinfection (39.4% [95% CI, 38.5%-40.3%] vs 8.8% [95% CI, 8.1%-9.5%]) (Table 2). In 21 states and DC, there were significantly higher proportions of US-born decedents with hepatitis B COD than the national distribution (63.3%), ranging from Florida (70.6% [95% CI, 67.9%-73.4%]) to Mississippi (95.2% [95% CI, 92.3%-98.1%]) (Figure 2). Furthermore, 7 states had significantly higher proportions of non-US–born decedents with hepatitis B COD than the national distribution (36.7%), ranging from New Jersey (47.1% [95% CI, 42.4%-51.8%]) to California (64.7% [95% CI, 63.1%-66.3%]). Washington, New Jersey, and Connecticut had an approximately equal distribution of US- and non-US–born decedents.

During 2010 to 2019, 4969 hepatitis B–listed deaths (28.6%) were also listed with HCV, HIV, or HDV coinfection (only 6 deaths listed HDV infection). Hepatitis B–listed deaths with HCV, HIV, or HDV coinfection, compared with hepatitis B–listed deaths without coinfection, were more frequently aged 45 to 64 years (70.3% [95% CI, 69.1%-71.6%] vs 48.8% [95% CI, 48.0%-49.7%]), born during 1945 to 1965 (75.3% [95% CI, 74.1%-76.5%] vs 56.8% [95% CI, 55.9%-57.7%]), Hispanic (10.0% [95% CI, 9.2%-10.8%] vs 7.0% [95% CI, 6.5%-7.4%]), non-Hispanic Black (24.0% [95% CI, 22.8%-25.2%] vs 17.1% [95% CI, 16.5%-17.8%]), non-Hispanic White (60.4% [95% CI, 59.0%-61.7%] vs 41.0% [95% CI, 40.2%-41.9%]), and US-born (88.5% [95% CI, 87.6%-89.4%] vs 53.4% [95% CI, 52.5%-54.3%]). The proportion of coinfections among hepatitis B–listed deaths in 11 states significantly exceeded the national distribution (28.4%); 41.0% of these deaths occurred in Ohio, Kentucky, Pennsylvania, Tennessee, and West Virginia (eFigure 2 in the Supplement). The proportion of hepatitis B–listed deaths without coinfection significantly exceeded the national distribution (71.6%) in 5 states, ranging from New York (75.7%) to Hawaii (90.1%). Of 6 deaths with HDV coinfection, 4 were among US-born individuals and 5 were men.

Overall, there was no difference in the frequency with which hepatitis B was listed as the UCOD among US- and non-US–born hepatitis B–listed decedents (30.2% [95% CI, 29.3%-31.1%] vs 29.4% [95% CI, 28.2%-30.5%]; P = .24) (Table 2). Among US-born decedents with hepatitis B COD, the most frequently listed UCOD was hepatitis B (3272 decedents [30.2%]), followed by liver cancer (1556 decedents [14.4%]) and nonliver cancers (1231 decedents [11.4%]) (Table 3). Among decedents with hepatitis B COD who were not born in the US, the most frequently listed UCOD was liver cancer (2384 decedents [37.9%]), followed by hepatitis B (1846 decedents [29.4%]) and nonliver cancers (733 decedents [11.7%]). For decedents with hepatitis B listed as a CCOD, liver cancer was more frequently listed as the UCOD among non-US–born decedents compared with US-born decedents (53.7% [95% CI, 52.2%-55.2%] vs 20.6% [95% CI, 19.7%-21.5%]; P < .001) (Table 2). In contrast, UCOD categories listed more frequently among US-born than non-US–born decedents with hepatitis B COD were HCV infection; other viral hepatitis (primarily hepatitis A); liver-related, alcohol; liver-related, nonalcohol; HIV infection; circulatory; respiratory; injuries or trauma; mental or behavioral disorders, and other (Table 2). Compared with non-US–born decedents with hepatitis B COD, US-born decedents had a significantly younger median age at death for the following UCOD conditions: HCV; liver-related, nonalcohol; circulatory; respiratory; diabetes; and injuries or trauma (Table 2 and Table 3). Irrespective of US birthplace status, hepatitis B–listed decedents had a significantly younger median age at death compared with decedents without hepatitis B COD (Table 3).

Hepatitis B–Listed Death Rate Changes From 2000 to 2009 vs 2010 to 2019

Compared with 2000 to 2009, during 2010 to 2019, the national hepatitis B–listed death rate declined by 19.0% (P < .001) (Table 1). Although significant declines in death rates occurred in 14 states (largest significant declines in Connecticut [45.8%; P = .005] and Pennsylvania [40.9%; P = .005]), significant increases were observed in West Virginia (83.8%; P = .005), and Kentucky (69.4%; P = .005) (Table 1).

Discussion

In this cross-sectional study assessing hepatitis B–listed deaths in the US, we observed a hepatitis B–listed death rate of 0.47 deaths per 100 000 population during 2010 to 2019, which represented significant declines for the US as a whole and for 14 states compared with 2000 to 2009. However, significant increases in hepatitis B–listed death rates were observed in West Virginia and Kentucky. These states also experienced the highest death rates from all causes in 2017.28 In all, areas with significantly higher hepatitis B–listed death rates than the national hepatitis B–listed death rate were primarily in the coastal and Appalachian regions. Compared with the national median age at hepatitis B–listed death, significantly younger median age at death occurred among decedents of 5 Appalachian states, where most decedents were US-born and approximately one-third had HCV or HIV coinfection. In contrast, a significantly older median age at death was observed among California decedents, who were predominantly not born in the US. Hepatitis B–listed deaths for persons not born in the US occurred primarily in West and East Coast states with large immigrant populations from hyperendemic areas.29 Non-US–born decedents more frequently had an older median age at death compared with the national median age at hepatitis B–listed death.

Nearly two-thirds of decedents with hepatitis B–listed deaths were born in the US; in 21 states and DC, the fraction of US-born decedents exceeded the national distribution. US-born decedents were more frequently coinfected with HCV or HIV than those not born in the US. During 2010 to 2019, only 6 decedents had HDV coinfection listed. Given that HDV testing is conducted inconsistently in the United States,30 it is likely that HDV coinfection deaths have been continually underreported.

We found no difference in the frequency with which hepatitis B was listed as the UCOD among US- and non-US–born decedents. However, when hepatitis B was listed instead as a CCOD, decedents not born in the US more often had liver cancer listed as the UCOD, whereas US-born decedents more often had UCOD conditions that included HCV infection, other viral hepatitis, HIV infection, alcoholic liver disease, respiratory and circulatory conditions, and drug overdose, alcohol poisoning, suicide, or homicide. A recent vital statistics analysis31 found that since 2014, these conditions also contributed to decreases in the overall US life expectancy, especially in areas where we observed high proportions of US-born hepatitis B–listed deaths and younger median ages at death, such as the Ohio River Valley and Appalachian region.

As chronic hepatitis B is a heterogeneous condition with a highly variable and unpredictable course, all persons with chronic infection require continual lifelong assessment, as a sizable proportion at some point may be indicated for hepatitis B antiviral therapy.32 Whether infected at birth or later in life, all persons with chronic hepatitis B need continual, lifelong medical care to monitor disease activity to determine whether and when antiviral treatment is indicated, and to undergo periodic surveillance for hepatocellular carcinoma as recommended.32 Irrespective of birthplace status or whether hepatitis B was listed as the UCOD or a CCOD, we found that decedents with hepatitis B COD had a significantly younger median age at death than decedents without hepatitis B listed as a COD. Most decedents with hepatitis B listed as a COD, regardless of birth status, had liver-related UCOD.

Limitations

This study has some limitations. Since this analysis hinged exclusively on the interpretation of MCOD data, its principal limitations were the use of data based on clinician judgment about causes and relative importance of conditions leading to death. Death certificates have been shown to have high rates of error, particularly as they pertain to chronic liver disease.23,24 Studies using medical records to validate death certificate COD have consistently shown that mortality data greatly underestimates the true hepatitis B mortality burden, even when persons with hepatitis B infection had a liver-related COD.1,24,33 Although findings from this study may be underestimated, they nonetheless support the consideration of CCOD in addition to the UCOD, and, more importantly, attest to its capacity to permit identification of the various conditions—especially those leading to early death—afflicting persons with chronic hepatitis B in the United States.2,23,24 Next, we were not able to calculate national age-adjusted hepatitis B–listed death rates in the US-born and non-US–born populations because those population-specific denominators are not available in the US Census population data. Additionally, American Indian and Alaska Native persons are often misclassified as other racial and ethnic groups on death certificates,26 resulting in underreporting of conditions among American Indian and Alaska Native persons. Furthermore, geographic characterizations among non-US–born persons should be interpreted with caution, as they may change their residence often before settling.

Conclusions

The findings of this cross-sectional study suggest that in addition to diagnosis and management of hepatitis B among non-US–born persons, US-born persons with chronic infection, who constituted approximately two-thirds of all hepatitis B–listed deaths, may also require diagnosis and management of viral coinfections, respiratory and cardiovascular conditions, nonviral liver disease, and addiction-related sequelae. Further reduction of hepatitis B mortality will require access to hepatitis B-related care that is continual and life-long. Universal hepatitis B screening in adults is expected to identify more persons with hepatitis B in need of linkage to comprehensive and routine medical care.

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Article Information

Accepted for Publication: May 11, 2022.

Published: June 28, 2022. doi:10.1001/jamanetworkopen.2022.19170

Open Access: This is an open access article distributed under the terms of the CC-BY License. © 2022 Ly KN et al. JAMA Network Open.

Corresponding Authors: Kathleen N. Ly, MPH (kathleenly@cdc.gov), and Philip R. Spradling, MD (pspradling@cdc.gov), Division of Viral Hepatitis, National Center for HIV, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, 1600 Clifton Rd NE, Mailstop US12-3, Atlanta, GA 30333.

Author Contributions: Ms Ly had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.

Concept and design: Ly, Spradling.

Acquisition, analysis, or interpretation of data: All authors.

Drafting of the manuscript: Ly, Spradling.

Critical revision of the manuscript for important intellectual content: All authors.

Statistical analysis: Ly, Yin.

Administrative, technical, or material support: Ly, Spradling.

Supervision: Spradling.

Conflict of Interest Disclosures: None reported.

Funding/Support: This work was supported by employment through the US federal government through the Centers for Disease Control and Prevention (CDC).

Role of the Funder/Sponsor: CDC scientific coauthors were involved in the design and conduct of the study; analysis and interpretation of the data; preparation, review, and approval of the manuscript; and the decision to submit the manuscript for publication. Collection and management of the original source US Multiple Cause of Death data were conducted prior to this study through an ongoing cooperative agreement between each state health department and the CDC’s National Center for Health Statistics.

Meeting Presentation: The preliminary work of this study was presented at The Liver Meeting 2019 of the American Association of the Study of Liver Diseases; November 9, 2019; Boston, Massachusetts.

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