Parents’ HPV vaccine choices hinge on protection duration and social cues

Parental hesitancy remains a major barrier to human papillomavirus (HPV) vaccination, and a new discrete choice experiment published in Archives of Public Health offers a detailed look at what actually drives parents’ decisions. The study, made available online as an open-access research article on 28 October 2026, combined a stated-preference survey with an intertemporal choice task to quantify how parents weigh vaccine attributes, how steeply they discount future benefits, and how social signals shape their willingness to vaccinate.

In the experiment, protection duration and vaccine effectiveness emerged as the primary determinants of parental choice. Parents also valued social-reference information: they were more likely to choose vaccination when told that healthcare professionals’ own children had been vaccinated. Notably, the vaccine’s origin showed no significant effect on choices. The researchers estimated attribute preferences using a mixed logit model and used latent class analysis to identify heterogeneity, segmenting the cohort into a receptive majority of 79.4 percent and a hesitant minority of 20.6 percent.

The study also probed intertemporal preferences by measuring monetary discount rates, a proxy for how strongly people favor immediate over delayed rewards. Interaction models indicated that monetary discounting was jointly associated with the structure of parents’ preferences. However, the authors report that no individual attribute interaction survived adjustment for multiple testing, meaning those attribute-level findings should be treated as exploratory. Interestingly, higher monetary discount rates were associated with membership in the receptive majority rather than the hesitant group.

The authors conclude that parental decisions about HPV vaccination reflect a combination of clinical attributes, social reference information and intertemporal preferences. Because protection duration and vaccine effectiveness mattered most, and because social-reference information about healthcare professionals’ children appeared to encourage vaccine uptake, they suggest that reducing out-of-pocket costs and communicating credible social-reference information are strategies worth testing in future intervention research. Given that the sample was predominantly urban and highly educated, the findings should be generalized with caution.

Subject of Research: How do intertemporal preference and social signals drive parental choices? a discrete choice experiment on human papillomavirus vaccination

Article Title: How do intertemporal preference and social signals drive parental choices? a discrete choice experiment on human papillomavirus vaccination

Article References: He, Y., Chen, T., Shen, Q., Zhang, Z., He, J., Yue, G., & He, Y. (2026). How do intertemporal preference and social signals drive parental choices? a discrete choice experiment on human papillomavirus vaccination. Archives of Public Health. https://doi.org/10.1186/s13690-026-02125-5

Image Credits: AI Generated

DOI: 10.1186/s13690-026-02125-5

Keywords: intertemporal, preference, social, signals, drive, parental, choices, discrete, choice, experiment, human, papillomavirus