Abstract C140: A population-based analysis of awareness and knowledge of HPV and HPV vaccine among Asian American adults by origin group, 2014-2019
Authors: Vu Milkie , Zhu Yenan , Trinh Duy D. , Hong Young-Rock , Suk Ryan 
Published: December 2023

Background: Awareness and knowledge of human papillomavirus (HPV) and HPV vaccine are critical antecedents of HPV vaccine uptake. While emerging literature has examined racial and ethnic differences in these areas, most either exclude Asian Americans, subsume them under the category of “other,” or aggregate all origin groups under a single category of “Asians.” To fill this gap in the literature regarding data disaggregation, we conducted an analysis of awareness and knowledge of HPV, the HPV vaccine, and HPV-related cancers among six Asian origin groups (Chinese, Filipinos, Indians, Japanese, Koreans, and Vietnamese), using nationally representative samples.  Methods: We performed a pooled cross-sectional study utilizing the Health Information National Trend Survey data (HINTS-4 cycle 4 [2014], HINTS-5 cycles 1-3 [2017-2019]), a nationally representative survey administered by the National Cancer Institute. We analyzed questions about knowledge of HPV, the HPV vaccine, and the facts that HPV causes cervical, oral, anal, and penile cancers by race and/or ethnicity. The sample included those who self-reported as Chinese, Filipino, Indian, Japanese, Korean, or Vietnamese origins; non-Hispanic White (NHW) respondents were the reference group. We used survey-design adjusted Wald chi-square tests.  Results: A total of 8,865 non-Hispanic White respondents and 623 Asian respondents were included in this study. Significantly lower proportions of most Asian origin groups (Chinese 45.5%; Indian 45.6%; Korean 39.7%; and Vietnamese 43.5%) had heard of HPV compared with NHW counterparts (69.4%). Significantly lower proportions of Chinese (50.9%), Filipino (47.0%) Korean (46.1%), and Vietnamese (38.8%) respondents had heard of the HPV vaccine compared with NHW respondents (68.1%). Significantly lower proportions of Chinese (41.0%), Indian (36.2%), Korean (32.9%), and Vietnamese (30.6%) respondents knew that HPV causes cervical cancer compared with NHW (55.7%). Significantly lower proportions of Chinese and Vietnamese respondents knew that HPV causes anal and oral cancers, and significantly lower proportions of Indian respondents knew that HPV causes penile cancer, when compared to NHW counterparts.  Discussion: Most Asian origin groups had lower knowledge of HPV-related facts, with varying magnitudes, compared with NHW counterparts. Vietnamese and Chinese respondents had significantly lower knowledge compared with NHW respondents for 5 out of 6 questions. For most questions, Vietnamese was the group with the lowest proportions of respondents reporting knowledge. Heterogeneity in HPV-related knowledge suggests the need to culturally tailor interventions about the HPV vaccine in appropriate languages to effectively reach different Asian origin groups, with particular attention to those with low awareness. Continued monitoring of HPV-related knowledge with disaggregated data collection for Asian origin groups is critical for efforts to increase educational outreach, combat vaccine misinformation, and improve HPV vaccine uptake.

Citation Format: Milkie Vu, Yenan Zhu, Duy D. Trinh, Young-Rock Hong, Ryan Suk. A population-based analysis of awareness and knowledge of HPV and HPV vaccine among Asian American adults by origin group, 2014-2019 [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 C140.