title: Baseline characteristics and mortality among people in care for chronic viral hepatitis: the chronic hepatitis cohort study.
abstract: BACKGROUND
  The Chronic Hepatitis Cohort Study (CHeCS), a dynamic prospective, longitudinal, observational cohort study, was created to assess the clinical impact of chronic viral hepatitis in the United States. This report describes the cohort selection process, baseline demographics, and insurance, biopsy, hospitalization, and mortality rates.
  
  
  METHODS
  Electronic health records of >1.6 million adult patients seen from January 2006 through December 2010 at 4 integrated healthcare systems in Detroit, Michigan; Danville, Pennsylvania; Portland, Oregon; and Honolulu, Hawaii were collected and analyzed.
  
  
  RESULTS
  Of 2202 patients with chronic hepatitis B virus (HBV) infection, 50% were aged 44-63 years, 57% male, 58% Asian/Pacific Islander, and 13% black; and 5.1% had Medicaid, 16.5% Medicare, and 76.3% private insurance. During 2001-2010, 22.3% had a liver biopsy and 37.9% were hospitalized. For the 8810 patients with chronic hepatitis C virus (HCV) infection, 75% were aged 44-63 years, 60% male, 23% black; and 12% had Medicaid, 23% Medicare, and 62% private insurance. During 2001-2010, 38.4% had a liver biopsy and 44.3% were hospitalized. Among persons in care, 9% of persons with HBV and 14% of persons with HCV infection, mainly those born during 1945-1964, died during the 2006-2010 five-year period.
  
  
  CONCLUSIONS
  Baseline demographic, hospitalization, and mortality data from CHeCS highlight the substantial US health burden from chronic viral hepatitis, particularly among persons born during 1945-1964.
authors.affiliation: Division of Viral Hepatitis National Center for HIV, Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA. amoorman@cdc.gov
authors.forename: Anne C
authors.initials: AC
authors.lastname: Moorman
authors.forename: Stuart C
authors.initials: SC
authors.lastname: Gordon
authors.forename: Loralee B
authors.initials: LB
authors.lastname: Rupp
authors.forename: Philip R
authors.initials: PR
authors.lastname: Spradling
authors.forename: Eyasu H
authors.initials: EH
authors.lastname: Teshale
authors.forename: Mei
authors.initials: M
authors.lastname: Lu
authors.forename: David R
authors.initials: DR
authors.lastname: Nerenz
authors.forename: Cynthia C
authors.initials: CC
authors.lastname: Nakasato
authors.forename: Joseph A
authors.initials: JA
authors.lastname: Boscarino
authors.forename: Emily M
authors.initials: EM
authors.lastname: Henkle
authors.forename: Nancy J
authors.initials: NJ
authors.lastname: Oja-Tebbe
authors.forename: Jian
authors.initials: J
authors.lastname: Xing
authors.forename: John W
authors.initials: JW
authors.lastname: Ward
authors.forename: Scott D
authors.initials: SD
authors.lastname: Holmberg
mesh_terms: D000328:Adult; D000368:Aged; D057286:Electronic Health Records; D005260:Female; D006254:Hawaii / Q000453:epidemiology; D019694:Hepatitis B, Chronic / Q000453:epidemiology / Q000401:mortality*; D019698:Hepatitis C, Chronic / Q000453:epidemiology / Q000401:mortality*; D006801:Humans; D008297:Male; D008824:Michigan / Q000453:epidemiology; D008875:Middle Aged; D009922:Oregon / Q000453:epidemiology; D010414:Pennsylvania / Q000453:epidemiology; D012189:Retrospective Studies