Grishma Hirode1, Sammy Saab2, Robert J Wong1. 1. Division of Gastroenterology and Hepatology, Alameda Health System, Highland Hospital, Oakland, California. 2. David Geffen School of Medicine, Department of Medicine, University of California at Los Angeles.
Abstract
Importance: One factor associated with the rapidly increasing clinical and economic burden of chronic liver disease (CLD) is inpatient health care utilization. Objective: To understand trends in the hospitalization burden of CLD in the US. Design, Setting, and Participants: This cross-sectional study of hospitalized adults in the US used data from the National Inpatient Sample from 2012 to 2016 on adult CLD-related hospitalizations. Data were analyzed from June to October 2019. Main Outcomes and Measures: Hospitalizations identified using a comprehensive review of CLD-specific International Classification of Diseases, Ninth Revision, Clinical Modification and International Statistical Classification of Diseases, Tenth Revision, Clinical Modification codes. Survey-weighted annual trends in national estimates of CLD-related hospitalizations, in-hospital mortality, and hospitalization costs, stratified by demographic and clinical characteristics. Results: This study included 1 016 743 CLD-related hospitalizations (mean [SD] patient age, 57.4 [14.4] years; 582 197 [57.3%] male; 633 082 [62.3%] white). From 2012 to 2016, the rate of CLD-related hospitalizations per 100 000 hospitalizations increased from 3056 (95% CI, 3042-3069) to 3757 (95% CI, 3742-3772), and total inpatient hospitalization costs increased from $14.9 billion (95% CI, $13.9 billion to $15.9 billion) to $18.8 billion (95% CI, $17.6 billion to $20.0 billion). Mean (SD) patient age increased (56.8 [14.2] years in 2012 to 57.8 [14.6] years in 2016) and, subsequently, the proportion with Medicare also increased (41.7% [95% CI, 41.1%-42.2%] to 43.6% [95% CI, 43.1%-44.1%]) (P for trend < .001 for both). The proportion of hospitalizations of patients with hepatitis C virus was similar throughout the period of study (31.6% [95% CI, 31.3%-31.9%]), and the proportion with alcoholic cirrhosis and nonalcoholic fatty liver disease showed increases. The mortality rate was higher among hospitalizations with alcoholic cirrhosis (11.9% [95% CI, 11.7%-12.0%]) compared with other etiologies. Presence of hepatocellular carcinoma was also associated with a high mortality rate (9.8% [95% CI, 9.5%-10.1%]). Cost burden increased across all etiologies, with a higher total cost burden among hospitalizations with alcoholic cirrhosis ($22.7 billion [95% CI, $22.1 billion to $23.2 billion]) or hepatitis C virus ($22.6 billion [95% CI, $22.1 billion to $23.2 billion]). Presence of cirrhosis, complications of cirrhosis, and comorbidities added to the CLD burden. Conclusions and Relevance: Over the study period, the total estimated national hospitalization costs in patients with CLD reached $81.1 billion. The inpatient CLD burden in the US is likely increasing because of an aging CLD population with increases in concomitant comorbid conditions.
Importance: One factor associated with the rapidly increasing clinical and economic burden of chronic liver disease (CLD) is inpatient health care utilization. Objective: To understand trends in the hospitalization burden of CLD in the US. Design, Setting, and Participants: This cross-sectional study of hospitalized adults in the US used data from the National Inpatient Sample from 2012 to 2016 on adult CLD-related hospitalizations. Data were analyzed from June to October 2019. Main Outcomes and Measures: Hospitalizations identified using a comprehensive review of CLD-specific International Classification of Diseases, Ninth Revision, Clinical Modification and International Statistical Classification of Diseases, Tenth Revision, Clinical Modification codes. Survey-weighted annual trends in national estimates of CLD-related hospitalizations, in-hospital mortality, and hospitalization costs, stratified by demographic and clinical characteristics. Results: This study included 1 016 743 CLD-related hospitalizations (mean [SD] patient age, 57.4 [14.4] years; 582 197 [57.3%] male; 633 082 [62.3%] white). From 2012 to 2016, the rate of CLD-related hospitalizations per 100 000 hospitalizations increased from 3056 (95% CI, 3042-3069) to 3757 (95% CI, 3742-3772), and total inpatient hospitalization costs increased from $14.9 billion (95% CI, $13.9 billion to $15.9 billion) to $18.8 billion (95% CI, $17.6 billion to $20.0 billion). Mean (SD) patient age increased (56.8 [14.2] years in 2012 to 57.8 [14.6] years in 2016) and, subsequently, the proportion with Medicare also increased (41.7% [95% CI, 41.1%-42.2%] to 43.6% [95% CI, 43.1%-44.1%]) (P for trend < .001 for both). The proportion of hospitalizations of patients with hepatitis C virus was similar throughout the period of study (31.6% [95% CI, 31.3%-31.9%]), and the proportion with alcoholic cirrhosis and nonalcoholic fatty liver disease showed increases. The mortality rate was higher among hospitalizations with alcoholic cirrhosis (11.9% [95% CI, 11.7%-12.0%]) compared with other etiologies. Presence of hepatocellular carcinoma was also associated with a high mortality rate (9.8% [95% CI, 9.5%-10.1%]). Cost burden increased across all etiologies, with a higher total cost burden among hospitalizations with alcoholic cirrhosis ($22.7 billion [95% CI, $22.1 billion to $23.2 billion]) or hepatitis C virus ($22.6 billion [95% CI, $22.1 billion to $23.2 billion]). Presence of cirrhosis, complications of cirrhosis, and comorbidities added to the CLD burden. Conclusions and Relevance: Over the study period, the total estimated national hospitalization costs in patients with CLD reached $81.1 billion. The inpatient CLD burden in the US is likely increasing because of an aging CLD population with increases in concomitant comorbid conditions.
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