Factors Associated with Hepatitis C Antibody Positivity in Korean Adults: A Cross-Sectional Study Based on 2013-2018 Korea National Health and Nutrition Examination Survey.

This study aimed to provide basic data on the prevention of hepatitis C infection by identifying factors related to it based on the data from the National Health and Nutrition Examination Survey (KNHANES). The sixth (2013-2015) and seventh (2016-2018) Korean National Health and Nutrition Examination Surveys conducted by the Korean Disease Control and Prevention Agency were analyzed. This is a population-based, nationally representative, multistage, cross-sectional survey of noninstitutionalized persons in Korea. Multivariate regression analysis was used to assess the significance of the variables. A total of 32,942 persons aged >20 years were selected for this study. Among them, 282 tested positive for hepatitis C antibodies, while 32,660 tested negative. Of the 282 persons who tested positive, 48.6% were men and 51.4% were women. The factors associated with hepatitis C infection were age, education level, self-rated health status, and liver cirrhosis. Therefore, there is a need to educate people and implement preventive programs based on age and education levels to reduce the incidence of hepatitis C infections. In addition, it is necessary to include hepatitis C screening as part of the National Health Examination to diagnose hepatitis C infections.