Vaccinate boys with the HPV vaccine? Really?

A Nationwide Study Comparing Knowledge and Beliefs about HPV among Female Students before and after HPV Vaccination

STUDY OBJECTIVE

To assess the knowledge and beliefs regarding human papillomavirus (HPV) and the HPV vaccine among girls before and after vaccination in the Malaysian HPV Immunisation Programme.

DESIGN

A nationwide longitudinal survey.

SETTING

Thirty-two randomly selected schools from 13 states and 3 federal territories in Malaysia from February to March 2013, and October to November 2013.

PARTICIPANTS

Form One female students (13 years old).

INTERVENTIONS

None.

MAIN OUTCOME MEASURES

Mean knowledge score of HPV infection.

RESULTS

A total of 2644 students responded to the prevaccination survey, of whom 2005 (70%) completed the postvaccination survey. The mean knowledge score was 2.72 (SD ± 2.20) of a maximum score of 10 in the prevaccination survey, which increased significantly to 3.33 (SD ± 1.73) after the 3 doses of HPV vaccine (P = .001). Many answered incorrectly that, "Only girls can get HPV infection" (91.5%, n = 1841 prevaccination vs 96.1%, n = 1927 postvaccination), and only a few were aware that, "Vaccinating boys helps to protect girls against HPV infection" (11.4%, n = 229 for prevaccination vs 10.2%, n = 206 for postvaccination). The mean knowledge score was significantly higher postvaccination among higher-income families and those with parents of a higher occupational status. Regarding beliefs about the HPV vaccine, 89.4% in the prevaccination survey held the view that they would not get a HPV infection, and the percentage remained similar in the postvaccination survey. Perceived severity of HPV infection also remained low in the pre- and postintervention groups. Only 21.5% reported receiving health information about HPV along with the provision of the HPV vaccine; those who received health information showed higher levels of knowledge.

CONCLUSION

Findings revealed a general lack of knowledge and erroneous beliefs about HPV and the HPV vaccine even after receiving vaccination. This suggests that imparting accurate knowledge about HPV along with vaccine administration is essential. Specifically, girls from lower socioeconomic groups should be a target of educational intervention.

Motivation for HPV Vaccination among Young Adult Men: Validation of TTM Decisional Balance and Self-Efficacy Constructs

Purpose.

In the United States, 36% of human papillomavirus (HPV)–related cancers occur among men. HPV vaccination can substantially reduce the risk of HPV infection; however, the vast majority of men are unvaccinated. This study developed and validated transtheoretical model–based measures for HPV vaccination in young adult men.

Design.

Cross-sectional measurement development.

Setting.

Online survey of young adult men.

Subjects.

Three hundred twenty-nine mostly college-attending men, ages 18 to 26.

Measures.

Stage of change, decisional balance (pros/cons), and self-efficacy.

Analysis.

The sample was randomly split into halves for exploratory principal components analysis (PCA), followed by confirmatory factor analyses (CFA) to test measurement models. Multivariate analyses examined relationships between scales.

Results.

For decisional balance, PCA revealed two uncorrelated five-item factors (pros α = .78; cons α = .83). For the self-efficacy scale, PCA revealed a single-factor solution (α = .83). CFA confirmed that the two-factor uncorrelated model for decisional balance and a single-factor model for self-efficacy. Follow-up analyses of variance supported the theoretically predicted relationships between stage of change, pros, and self-efficacy.

Conclusion.

This study resulted in reliable and valid measures of pros and self-efficacy for HPV vaccination that can be used in future clinical research.

Young Hispanic Men and Human Papillomavirus Vaccination Choices

This exploratory descriptive study examined perceived vulnerabilities to human papillomavirus (HPV) and the correlation to factors influencing vaccine beliefs and vaccine decision making in young Hispanic males attending a large public urban university. Only 24% of participants believed that the HPV vaccine could prevent future problems, and 53% said they would not be vaccinated. The best predictors of HPV vaccination in young Hispanic men were agreement with doctor recommendations and belief in the vaccine's efficacy. Machismo cultural norms influence young Hispanic men's HPV-related decision making, their perceptions of the vaccine, and how they attitudinally act on what little HPV information they have access to. This study provides culturally relevant information for the development of targeted health education strategies aimed at increasing HPV vaccination in young Hispanic men.