Abstract C100: An effective intervention toolkit to promote medication adherence among Asian Americans living with chronic hepatitis B
Authors: Lu Wenyue , Zhu Lin , Begum Thoin , Tan Yin , Nguyen Minhhuyen T. , Ma Xiaoli , Lai Sarah , Tran Tam , Do Phuong , Handorf Elizabeth , Yeh Ming-Chin , Ma Grace X. 
Published: December 2023

Abstract
Introduction: Asian Americans is a Hepatitis B (HBV) disparity population who only account for 7% of the US population but experience nearly 60% burden of chronic HBV, which is associated with 75% of hepatocellular carcinoma (HCC). Adherence to HBV medication guideline is a practical approach to preventing liver cancer. However, limited studies have been conducted on promoting HBV medication adherence among underserved Asian American HBV patients. Methods: This study utilized 18-month follow-up data from a randomized controlled clinical trial aimed at improving long-term adherence to HBV medication adherence. Eligible Asian American HBV patients were recruited in the Greater Philadelphia and New York City areas from community-based organizations and clinics that serving the targeted population. Guided by Community-based Participatory Research (CBPR) approach, we developed and implemented Virtual Patient Navigation Toolkit and Text Messaging (VPN Toolkit+TM) to promote HBV pill-taking among the targeted population. HBV medication adherence was assessed using the Morisky 8-Item Medication Adherence Scale with a score ranges from 0 to 8, depression was measured with Patient Health Questionnaire-9, and knowledge of HBV was evaluated with a 10-item scale. A p-value that is smaller than 0.5 is considered statistically significant. Results: Among 149 participants (108 Chinese and 41 Vietnamese) who were prescribed HBV medication, 44.97% were female. Bivariate analysis showed that medication adherence was significantly higher in the intervention group than in the control (7.25 vs. 5.57, p&lt;0.001 ) group at the 18-month follow-up. Results from the multivariable analysis revealed that compared with their control group counterparts, intervention group participants had significantly higher Morisky medication score (Coef.= 0.66, p=0.044), controlling for demographics, depression level, and HBV knowledge score. The results indicated that there was a significant intervention effect in medication adherence at 18-month follow-up. In addition, we found that a lower depression score (Coef.=-0.11, p&lt;0.001) and a higher level of HBV related knowledge (Coef.=0.40, p&lt;0.001) were significant predictors of better HBV medication adherence at 18-month follow-up assessment, with other variables held constant. Conclusion: The findings imply the necessity of promoting VPN Toolkit+ TM intervention among medically underserved HBV pill-taking patients. Moreover, targeted interventions addressing psychosocial barriers and promoting HBV-related knowledge would effectively promote HBV medication adherence among Asian Americans with chronic HBV infection.
Citation Format: Wenyue Lu, Lin Zhu, Thoin Begum, Yin Tan, Minhhuyen T. Nguyen, Xiaoli Ma, Sarah Lai, Tam Tran, Phuong Do, Elizabeth Handorf, Ming-Chin Yeh, Grace X. Ma. An effective intervention toolkit to promote medication adherence among Asian Americans living with chronic hepatitis B [abstract]. In: Proceedings of the 16th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2023 Sep 29-Oct 2;Orlando, FL. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2023;32(12 Suppl):Abstract nr C100.