Human Papillomavirus Vaccine Initiation for Adolescents Following Rhode Island’s School-Entry Requirement, 2010–2016

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Objectives. To assess changes in human papillomavirus (HPV) vaccine initiation for adolescent girls and boys in Rhode Island compared with all other states.

Methods. We estimated the gender-specific effects of Rhode Island’s school-entry HPV vaccination policy on self-reported HPV vaccination initiation by using a difference-in-differences design with the National Immunization Survey–Teen from 2010 through 2016.

Results. Compared with boys in other states, boys in Rhode Island increased their HPV vaccine initiation rate by 11% (b = 0.11; 95% confidence interval [CI] = 0.05, 0.18) after enactment of the requirement. No difference was seen in the probability of HPV vaccine initiation among girls in Rhode Island compared with girls in the multistate control (b = −0.01; 95% CI = −0.08, 0.05).

Conclusions. Our analysis identified an 11% increase in HPV vaccine initiation rate among boys in Rhode Island after the school-entry requirement was enacted, whereas no significant change was observed for girls.

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American Journal of Public Health, v. 108, issue 10, p. 1421-1423