Family History Shapes Whether Hepatitis Knowledge Leads to Follow-Up Care in Guangzhou Study

Chronic viral hepatitis remains one of the world’s most consequential infectious disease burdens, quietly progressing toward cirrhosis and hepatocellular carcinoma in millions of people who are often unaware of their infection or, even when diagnosed, fail to return for the monitoring that could catch deterioration early. A new cross-sectional study from Guangzhou, China, published in Virology Journal, adds an important and sobering data point to this global problem: knowing more about hepatitis does not, by itself, make patients show up for follow-up care. The research, led by Zhe Huang and colleagues at the Hepatology Center of Guangzhou Eighth People’s Hospital, Guangzhou Medical University, examined more than 1,100 people who screened positive for viral hepatitis in community-based testing and found that overall health knowledge bore no significant relationship to whether patients adhered to standardized long-term follow-up. Only when the investigators stratified the population by family history of liver disease did a clear signal emerge, and that signal carries direct implications for how hepatitis programs should be designed.

The study drew on a large community screening cohort in Guangzhou involving 30,012 individuals who underwent serological testing for viral hepatitis markers, including hepatitis B surface antigen and hepatitis C virus antibodies. From this effort, 1,676 people tested positive for viral hepatitis. After excluding 516 participants with incomplete baseline questionnaires, the final analytical sample comprised 1,160 individuals. The researchers then divided these screening-positive patients into two groups based on a single, clinically meaningful behavior: whether they returned to certified viral hepatitis treatment facilities to receive standardized follow-up after learning of their positive result. Those who did, 285 cases or 24.57 percent of the sample, formed the observation group, while the 875 cases who did not return, 75.43 percent, formed the control group. The stark imbalance between the two groups is itself a finding worth pausing on, because it quantifies the scale of the linkage problem that hepatitis programs face even in a well-resourced urban setting with accessible treatment facilities.

To measure knowledge, all participants completed a self-developed six-item standardized questionnaire covering prevention and treatment of viral hepatitis. A total score of at least three points, meaning more than half of the six-item scale, was defined as adequate hepatitis knowledge. The team then applied a battery of statistical techniques to probe the relationship between knowledge and adherence: subgroup comparisons, stratified chi-squared analysis, multivariate linear regression, binary logistic regression with interaction terms, and one-to-three propensity score matching to adjust for baseline differences between the groups. This methodological arsenal matters because simple comparisons between people who seek care and those who do not are notoriously vulnerable to confounding. Patients who return for follow-up may differ systematically in age, education, disease awareness, or family experience with liver disease, and any of those differences could masquerade as a knowledge effect if not properly controlled.

The headline result was negative, and the authors are explicit about it. Across all screening-positive patients, no significant overall correlation was observed between hepatitis knowledge level and follow-up adherence. The knowledge qualification rate was 53.33 percent in the observation group versus 52.11 percent in the control group, a difference that was statistically indistinguishable with a P value of 0.720. In other words, roughly half of the patients in both groups possessed adequate knowledge about hepatitis prevention and treatment, and knowing more did not predict who would come back for care. This null finding challenges a widespread assumption in public health practice, namely that health education campaigns which raise awareness will translate into improved health-seeking behavior. The Health Belief Model, which underpins much of health behavior theory, posits that perceived susceptibility and severity drive action, but this study suggests that knowledge alone, without the motivational scaffolding of personal or family experience, may be insufficient to move patients from awareness to action.

When the researchers examined demographic and clinical characteristics, most variables showed no significant differences between the adherent and non-adherent groups. Gender, ethnicity, marital status, education, occupation, and hepatitis type all failed to distinguish the two groups in significance testing. Two variables did stand out: age, with a P value of 0.016, and family history of liver disease, with a P value below 0.001. Propensity score assessment using standardized mean differences demonstrated adequate balance for age after matching, at 0.022, but family history showed severe baseline imbalance, with a standardized mean difference of 0.718. This imbalance is a critical technical detail, because it means that patients with a known family history of liver disease were dramatically overrepresented among those who returned for follow-up, and any analysis that fails to account for this difference risks drawing distorted conclusions about what drives adherence.

The stratified analysis revealed the study’s most striking pattern. Among participants with a definite family history of liver disease, the knowledge qualification rate in the observation group was significantly higher than in the control group, suggesting that for these patients, knowledge and adherence traveled together. Among participants with unknown family history, the pattern reversed dramatically: only 6.58 percent of the adherent observation group had adequate knowledge, compared with 41.45 percent of the non-adherent control group. This reversed gap is one of the most intriguing findings in the paper, hinting that patients without a known family history who nonetheless adhere to follow-up may be doing so for reasons unrelated to knowledge, while those with unknown family history who possess knowledge may still fail to act on it. Subgroup analyses restricted to the observation group further showed that family history, with a P value of 0.001, and educational attainment, with a P value of 0.016, were both associated with hepatitis knowledge qualification status, with participants who had a confirmed family history of liver disease and college-level or higher education exhibiting the highest qualification rates.

Yet the formal statistical test for moderation complicates the story. In multivariate logistic regression analysis, the interaction term between family history and total knowledge score lacked statistical significance, with an odds ratio of 0.953 and a P value of 0.729. This means that, strictly speaking, the global analysis does not support family history as a formal statistical moderator of the knowledge-adherence relationship. However, stratified analyses revealed divergent associations within subgroups: the positive association between knowledge score and follow-up compliance was detected only among patients with a definite family history of liver disease, with an odds ratio of 1.118 and a P value of 0.015. For every one-point increase in knowledge score, the odds of follow-up compliance rose by roughly 12 percent in this subgroup, while no such relationship existed in the rest of the population. The authors are careful to frame this as subgroup heterogeneity rather than confirmed moderation, and they explicitly call for further multi-center longitudinal studies and randomized controlled trials to validate the subgroup findings and evaluate stratified intervention effects.

The practical implications reach well beyond Guangzhou. The authors conclude that universal health education alone cannot improve follow-up compliance, a conclusion that should give pause to program designers who rely on broadcast-style awareness campaigns to close the screening-to-treatment cascade. Instead, they advocate targeted strategies, including risk-stratified health education based on family history and integrated screening-treatment linkage with case management, as the appropriate tools for grassroots hepatitis prevention. This aligns with a broader shift in global hepatitis elimination strategy, championed by the World Health Organization, toward simplification and decentralization of care, in which every person who screens positive is actively accompanied into evaluation and treatment rather than simply handed information and left to navigate the system alone. Case management, in which a designated worker tracks and supports each positive patient, directly addresses the 75 percent attrition observed in this cohort.

Several limitations deserve attention when weighing these findings. The cross-sectional design captures a single moment in time and cannot establish whether low knowledge causes poor adherence or whether both reflect deeper structural barriers such as cost, distance, work obligations, or stigma. The knowledge instrument was self-developed rather than a validated external scale, and the severe baseline imbalance in family history, despite propensity score matching, means residual confounding cannot be excluded. The observation group was also relatively small at 285 participants, which limits statistical power for interaction testing, and interaction analyses are notoriously underpowered in general. Still, the study’s scale, with more than 30,000 community members screened and over 1,100 positive patients analyzed, and its rigorous multi-method statistical approach make it a valuable contribution. As countries pursue the 2030 elimination targets for viral hepatitis, the message from Guangzhou is clear: information is necessary but not sufficient, and the patients who most need to act on what they know may be precisely those for whom knowledge carries no personal urgency until programs make follow-up effortless, personal, and connected to their own family story of liver disease.

Subject of Research: The relationship between hepatitis knowledge, family history, education, and follow-up adherence among community screening-positive viral hepatitis patients in Guangzhou, China

Article Title: Family history and education moderate adherence and knowledge in viral hepatitis patients: a cross-sectional study in Guangzhou, China

Article References: Huang, Z., Li, B., Lu, A., Tan, Y., Lin, L., Liu, S., Lin, G., Ning, Q., Liu, J., Liang, H., Du, Z., Li, J., Guan, Y., & Tang, X. (2026). Family history and education moderate adherence and knowledge in viral hepatitis patients: a cross-sectional study in Guangzhou, China. Virology Journal. https://doi.org/10.1186/s12985-026-03273-4

Image Credits: AI Generated

DOI: 10.1186/s12985-026-03273-4

Keywords: viral hepatitis, hepatitis B, hepatitis C, follow-up adherence, health knowledge, family history, health education, screening-treatment linkage, cross-sectional study, Guangzhou, hepatocellular carcinoma, cirrhosis