Characteristic geoepidemiology of primary biliary cholangitis in Taiwan: A nationwide population‐based study

Author:

Cheng Jur‐Shan12,Chen Wei‐Ting23,Ku Hsin‐Ping1,Chien Rong‐Nan23,Chang Ming‐Ling23ORCID

Affiliation:

1. Clinical Informatics and Medical Statistics Research Center College of Medicine Chang Gung University Keelung Taiwan

2. Division of Hepatology, Department of Gastroenterology and Hepatology Chang Gung Memorial Hospital Taoyuan Taiwan

3. Department of Medicine College of Medicine Chang Gung University Taoyuan Taiwan

Abstract

AbstractAimData on the geoepidemiology and outcomes of primary biliary cholangitis (PBC) in Asia are limited; thus, we aimed to collect and assess this information for Taiwan.MethodsA nationwide population‐based cohort study was undertaken using data from the Taiwan National Health Insurance Research Database. Primary biliary cholangitis was defined by the International Classification of Diseases, Ninth Revision, Clinical Modification code 571.6 based on alkaline phosphatase and antimitochondrial antibody measurements and ursodeoxycholic acid treatment.ResultsDuring 2002–2015, 2737 patients (2137 female patients; mean age, 57.78 years) had PBC. The average annual age‐ and sex‐adjusted prevalence and incidence rates of PBC were 8.092/105 and 1.148/105, respectively. Prevalent cases peaked in patients aged 50–59 years; the female‐to‐male ratio was 4.21. Annual prevalence rates increased with time (average percentage change, 12.03%; p < 0.0001). The annual incidence rates decreased with time (−7.39%; p = 0.000011) in female patients (−8.94%; p = 0.000003) but remained steady in male patients. Female‐to‐male and northern‐to‐southern relative risks of PBC incidence rates ranged from 2.2675 to 4.3318 and from 1.5707 to 3.1725, respectively. The 14‐year hepatocellular carcinoma (HCC) cumulative incidence was 9.11%, and the mortality rate was 32.44%; the cumulative incidences of dyslipidemia, thyroid disease, and extrahepatic cancers were 65.13%, 24.40%, and 12.79%, respectively. Higher cumulative incidences of HCC (p = 0.0064) and mortality (p < 0.0001) were noted in male than female PBC patients; southern Taiwan PBC patients had higher cumulative incidences of mortality (p < 0.0001) than their northern counterparts.ConclusionIn Taiwan, decreasing trends in incidence rates and the female‐to‐male ratio of PBC patients and specific sex and geographic impacts on the incidence rates and outcomes of PBC demand further investigation.

Funder

Chang Gung Medical Foundation

National Science Council

Publisher

Wiley

Subject

Infectious Diseases,Hepatology

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