Locations and Reasons for Initial Testing for Hepatitis C Infection

Chronic Hepatitis Cohort Study, United States, 2006-2010

Joseph A. Boscarino, PhD; Stuart C. Gordon, MD; Loralee B. Rupp, MBA; Mark A. Schmidt, PhD; Vinutha Vijayadeva, MBBS; Anne Moorman, MPH; Fujie Xu, MD; Scott D. Holmberg, MD; Stephen C. Ko, MD

Disclosures

Morbidity and Mortality Weekly Report. 2013;62(32):645-648. 

In This Article

Editorial Note

The Chronic Hepatitis Cohort Study survey data analyzed in this report indicate that most initial HCV tests occurred in a physician's office, and nearly half of those infected with HCV only sought testing after experiencing clinical indications of liver disease. Testing for HCV infection in a location other than a physician's office occurred for about one third of respondents. Other locations included clinics, inpatient settings, and emergency departments. Other studies have shown a greater proportion (50.7%) of testing in locations other than a physician's office or laboratory.[8] The results in this report suggest that, in addition to increasing testing in physicians' offices, other locations might be important for increasing the number of HCV-infected persons who are tested and referred to care.

Less than one fourth of HCV-infected patients gave CDC risk indications as a reason for testing, but many reported various other reasons (e.g., doctor recommendation, "thought I was exposed," and having many sex partners) that were not included in the 1998 CDC recommendations.[2] Other reasons for testing (e.g., multiple sex partners) also have been reported.[8,9] Responses in the study, such as "thought I was exposed" or doctor recommendation, suggest improved patient education could enhance patient's understanding of the risks for HCV infection.

This analysis indicates that approximately four out of five patients in this study of 2006–2010 data were born during 1945–1965, and therefore were within the birth cohort targeted in the 2012 CDC HCV testing guidelines.[5] Only 21.3% of those born during 1945–1965 gave a reason for testing (injection drug use or hemodialysis) that was included in the earlier 1998 CDC risk indications.

CDC is identifying strategies to help health-care providers implement its new HCV testing guidelines, which target all persons born during 1945–1965. These strategies include simplification of HCV testing algorithms in primary care and public health settings, development of national educational strategies for testing those born during 1945–1965, and supporting evidence-based care models that enhance delivery of high-quality HCV assessment and management.[10]

The findings in this report are subject to at least three limitations. First, patients surveyed from the four health sites were not from a nationally representative sample, so these results are not generalizable to the U.S. population of persons with HCV infection. Almost all patients were covered by some form of health insurance, and risk-based behaviors (e.g., injection drug use) were less common in this group than has been observed in surveillance-based studies.[9] Second, only 57.9% of persons contacted completed the survey, which might have resulted in response bias. Finally, the long interval between initial testing and time of interview and the potential for inconsistency between self-reported reasons for testing and a health-care provider's rationale for testing might have resulted in recall bias.

This survey of patients with HCV infection enrolled in the Chronic Hepatitis Cohort Study indicates that nearly four out of five participants were born during 1945–1965, a cohort for whom CDC recommends HCV testing in its 2012 guidelines.[5] Because a substantial proportion of HCV infections were identified after testing for clinical indications and few patients reported the 1998 CDC risk indications as a reason for initial testing, these data further support the CDC recommendation for testing all persons in the birth cohort of 1945–1965 in addition to risk-based testing. Physicians' offices and other locations might be important venues for implementing these guidelines to increase HCV testing.

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