Sayward E Harrison1, Valerie Yelverton2, Yunfei Wang3, Jan Ostermann4, Laura J Fish5, Charnetta L Williams6, Lavanya Vasudevan7, Emmanuel B Walter8. 1. Sayward E Harrison, Department of Psychology, University of South Carolina, Columbia, SC, and South Carolina Smart State Center for Healthcare Quality, University of South Carolina, Columbia, SC, United States;, Email: harri764@mailbox.sc.edu. 2. Valerie Yelverton, Department of Health Services Policy & Management, University of South Carolina, Columbia, SC, United States. 3. Yunfei Wang, Duke Vaccine and Trials Unit, Duke Human Vaccine Institute, Durham, NC, United States. 4. Jan Ostermann, Department of Health Services Policy & Management, University of South Carolina, Columbia, SC, United States. 5. Laura J Fish, Department of Family Medicine and Community Health, Duke University School of Medicine, Durham, NC, and Duke Cancer Institute, Durham, NC, United States. 6. Charnetta L Williams, Immunization Services Division, National Center for Immunization and Respiratory Diseases, US Centers for Disease Control and Prevention, Atlanta, GA, United States. 7. Lavanya Vasudevan, Department of Family Medicine and Community Health, Duke University School of Medicine, Durham, NC, and Duke Global Health Institute, Durham, NC, United States. 8. Emmanuel B Walter, Duke Vaccine and Trials Unit, Duke Human Vaccine Institute, Durham, NC, Duke Global Health Institute, Durham, NC, and Department of Pediatrics, Duke University School of Medicine, Durham, NC, United States.
Abstract
Objectives: Understanding the relationship between human papillomavirus (HPV) knowledge and vaccination behavior is important to inform public health interventions, yet few validated HPV knowledge scales exist. This study describes development of the Human Papillomavirus Knowledge Questionnaire (HPV-KQ) and its validation with parents residing in the southern United States (US). Methods: Drawing on previously published measures, we developed the 13-item HPV-KQ and administered the scale via Web-based survey to parents (N=1105) of adolescents ages 9 to 17 years. Dimensionality, internal consistency, model fit, and predictive validity were assessed. Results: The scale was bidimensional. One factor captured general HPV knowledge, and the second factor captured perceptions of gender differences in HPV infection and vaccine recommendations. The 13-item scale and 2-factor solution displayed strong internal consistency and good model fit. Parents of vaccinated adolescents scored higher on the 13-item HPV-KQ (Mean = 8.56) than parents of unvaccinated adolescents (Mean = 6.43) (p < .001). In regression models, controlling for key covariates, parents' performance on the HPV-KQ predicted adolescent HPV vaccination (p < .001). Conclusions: Evaluation indicates the HPV-KQ is a reliable and valid tool for measuring knowledge of HPV and the HPV vaccine among parents residing in the southern US. We recommend further efforts to validate the scale with other populations.
Objectives: Understanding the relationship between human papillomavirus (HPV) knowledge and vaccination behavior is important to inform public health interventions, yet few validated HPV knowledge scales exist. This study describes development of the Human Papillomavirus Knowledge Questionnaire (HPV-KQ) and its validation with parents residing in the southern United States (US). Methods: Drawing on previously published measures, we developed the 13-item HPV-KQ and administered the scale via Web-based survey to parents (N=1105) of adolescents ages 9 to 17 years. Dimensionality, internal consistency, model fit, and predictive validity were assessed. Results: The scale was bidimensional. One factor captured general HPV knowledge, and the second factor captured perceptions of gender differences in HPV infection and vaccine recommendations. The 13-item scale and 2-factor solution displayed strong internal consistency and good model fit. Parents of vaccinated adolescents scored higher on the 13-item HPV-KQ (Mean = 8.56) than parents of unvaccinated adolescents (Mean = 6.43) (p < .001). In regression models, controlling for key covariates, parents' performance on the HPV-KQ predicted adolescent HPV vaccination (p < .001). Conclusions: Evaluation indicates the HPV-KQ is a reliable and valid tool for measuring knowledge of HPV and the HPV vaccine among parents residing in the southern US. We recommend further efforts to validate the scale with other populations.
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