Browsing by Subject "early adolescence"

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    Human Papillomavirus Vaccine Initiation among 9-13-Year-Olds in the United States
    (Elsevier, 2015) Donahue, Kelly L.; Hendrix, Kristin S.; Sturm, Lynne A.; Zimet, Gregory D.; Department of Pediatrics, IU School of Medicine
    OBJECTIVE: The quadrivalent and 9-valent human papillomavirus (HPV) vaccines are licensed for administration among 9-26-year-old males and females, with routine vaccination recommended for 11-12-year-olds. Despite the availability of the vaccine at younger ages, few studies have explored vaccine uptake prior to age 13, and national HPV vaccination surveillance data is limited to 13-17-year-olds. Our objective was to examine rates and predictors of HPV vaccine initiation among 9-13-year-olds in the United States. METHODS: A national sample of mothers of 9-13-year-olds in the United States (N=2,446) completed a 2014 Web-based survey assessing socio-demographic characteristics, child's HPV vaccination history, provider communication regarding the vaccine, and other attitudes and behaviors pertaining to vaccination and healthcare utilization. The main outcome measure was child's initiation of the HPV vaccine (i.e., receipt of one or more doses). RESULTS: Approximately 35% of the full sample and 27.5% of the 9-10-year-olds had initiated HPV vaccination. Females were more likely than males to have initiated HPV vaccination by the age of 13 but not by younger ages. Strength of health provider recommendation regarding HPV vaccination was a particularly salient predictor of vaccine initiation. CONCLUSIONS: Approximately a third of children may be initiating the HPV vaccine series before or during the targeted age range for routine administration of the vaccine. Because coverage remains below national targets, further research aimed at increasing vaccination during early adolescence is needed. Improving providers' communication with parents about the HPV vaccine may be one potential mechanism for increasing vaccine coverage.
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    Provider Communication and Mothers’ Willingness to Vaccinate Against HPV and Influenza: A Randomized Health Messaging Trial
    (Elsevier, 2017) Donahue, Kelly; Hendrix, Kristin; Sturm, Lynne; Zimet, Gregory; Department of Pediatrics, School of Medicine
    Objective Understand the effect of a health messaging intervention focused on provider communication about vaccination on mothers’ willingness to vaccinate children against HPV and seasonal influenza. Methods 2,476 mothers of 9-13-year-olds in the U.S. completed a Web-based survey in August 2014. Mothers were randomized to one of two groups targeting HPV or influenza vaccine. Mothers whose child had not received the target vaccine (i.e., zero doses of HPV vaccine/no prior-year administration of influenza vaccine) were randomized to the intervention. The study used a 3x2 between-subjects design; illustrated vignettes depicted one of three levels of provider recommendation strength (brief mention of vaccination, strong recommendation of vaccination, or personal disclosure of vaccination of own children), and presence or absence of information comparing safety of vaccination to the safety of a common daily activity. Outcome was mothers’ willingness to have their child receive the target vaccine (0-100.) Perceived benefits of vaccination were assessed prior to viewing the intervention and included as a covariate in analyses, along with child gender. Results For HPV vaccine, there was a main effect of safety information, F(1,684)=7.99, p=.005, and perceived benefits of vaccination, F(1,684)=221.64, p<.001) on mothers’ willingness to vaccinate. For influenza, perceived benefits of vaccination significantly related to willingness, F(1,462)=105.78, p<.001). Child gender was not associated with willingness. Conclusions Provider communication about vaccination may need to be tailored to the vaccine in question. A next step to increasing coverage for both HPV and influenza vaccines may be an intervention aimed at increasing mothers’ perceived benefits of vaccination.