Brief Interventions to Increase HPV Vaccine Acceptance in School-based Health Centers
6 februari 2014 bijgewerkt door: Vaughn Rickert, Indiana University
Brief Interventions to Increase HPV Vaccine Acceptance in School-based Health Centers in Adolescents
Using health behavior theories and theories related to the effects of persuasive messages (i.e., inoculation theory), we plan to: 1. Systematically test the effects of brief persuasive message interventions on receipt of the first dose of HPV vaccine; and 2. evaluate the effects of the interventions on followup with subsequent doses of vaccine (using reminder notices with persuasive message content).
One set of interventions will involve a comparison of a 1 sided message, which only emphasizes the positive aspects of a recommended behavior, with a 2 sided message, which presents negative aspects of the behavior followed by positive counterarguments.
A second set of interventions will involve a test of a social compliance (foot-in-the-door technique, in which half of the parent participants will be asked to respond to a high compliance request (i.e., a request likely to generate high compliance, such as, "Do you want to protect your daughter from cancer? or for male children, "Do you want to protect your son from genital warts?"before subsequently being asked about actually having their adolescents vaccinated.
The other half of the parents will not receive a high compliance request.
Parents of 11-14 year old adolescents will be randomized to the two sets of interventions, resulting in a 2 X 2 design: message sidedness (1 sided; 2 sided) and social compliance request (yes; no).
The specific aims of this proposal are to evaluate the 1) efficacy of 2 sided vs. 1 sided messages on rates of HPV vaccination; 2) the efficacy of a social compliance intervention on rates of HPV vaccination; and 3) potential moderators and mediators of message effect on vaccine acceptance.
Studie Overzicht
Toestand
Onbekend
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
The proposed study will employ a randomized, full factorial experimental design to examine the effects of brief message interventions on parents' acceptance of the first dose of HPV vaccine for their adolescents aged 11-14 years, as well as follow through with subsequent doses. Specifically, the study will employ a 2 x 2 experimental design, in which participants will be assigned randomly to one of two different message sidedness conditions (1 sided vs. 2 sided) and two social compliance conditions (high compliance request [HCR] vs. noHCR). The interventions will be administered by a bilingual research assistant who will read, verbatim, scripts provided to them. Computer assisted telephone interview (CATI) will be used to gather demographic and background information as well as parental health beliefs regarding preexisting worries about HPV vaccine leading to safety concerns (moderator variable) prior to administration of the interventions. After the interventions, additional health beliefs will be assessed (mediators).
- A greater proportion of girls as compared to boys will receive a first dose of vaccine.
- Among both girls and boys who receive a first dose of Gardasil™, no differences in completion rates will be detected.
- The social compliance intervention to be more effective with parents of girls as compared to parents of boys. This prediction of a differential effect is based on the fact that cervical cancer will be seen as a more serious and less stigmatizing condition than genital warts.
In summary, the implementation of this protocol will allow us to systematically examine the use of two different interventions on parents of both boys and girls. Thus, parents (n=800) of 11-14 year old girls and boys will be randomized to the two sets of interventions, resulting in a 2 X 2 design: message sidedness (1-sided; 2-sided) and HCR (yes; no).
Studietype
Ingrijpend
Inschrijving (Verwacht)
600
Fase
- Niet toepasbaar
Contacten en locaties
In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.
Studie Locaties
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Texas
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Galveston, Texas, Verenigde Staten, 77550
- Teen Health Centers
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Deelname Criteria
Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
11 jaar tot 15 jaar (Kind)
Accepteert gezonde vrijwilligers
Ja
Geslachten die in aanmerking komen voor studie
Allemaal
Beschrijving
Inclusion Criteria:
- The parents of adolescent males and females (aged 11-14 years) who have provided written consent for their adolescent to receive health care services through the Teen Health Center, Inc, a nonprofit organization that works in collaboration with the Department of Pediatrics at the University of Texas Medical Branch, Galveston, Texas and whose adolescents have not received their first dose of HPV vaccine, will be eligible to participate.
Exclusion Criteria:
- Having received one or more doses of the HPV vaccine Gardasil
Studie plan
Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Faculteitstoewijzing
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
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Experimenteel: Compliance
Parents will be randomized to receive high or no compliance condition where those in the experimental group will be asked about whether or not they will protect their daughter from cervical cancer or for males, their son from genital warts.
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Parent will either receive a high or no compliance condition where each is asked to endorse the importance of prevention cervical cancer or genital warts depending on their teen's gender.
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Experimenteel: Message sidedness
Parents will be given either a one-sided verbal message or a two-sided verbal message about the HPV vaccine.
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Parent will receive either a one-sided or two-sided message about the HPV vaccine
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Gardasil immunization
Tijdsspanne: One year
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Parent signs vaccine information sheet and returns to school-based health center.
Adolescent is vaccinated with first dose of Gardasil by licensed health care professional.
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One year
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Completion of three dose series of Gardasil
Tijdsspanne: Three years
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We will identify all enrolled parents to determine whether their adolescent received all three required Gardasil immunization across a three year period.
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Three years
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Message type
Tijdsspanne: Two years
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Determine whether the type of message delivered to parent, i.e., one-sided or two-sided, increases the number of first dose immunizations.
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Two years
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Gender
Tijdsspanne: One year
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Determine if there are gender differences between male and female children relative to first dose administration
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One year
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Medewerkers en onderzoekers
Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.
Sponsor
Medewerkers
Onderzoekers
- Hoofdonderzoeker: Vaughn I Rickert, PsyD, Indiana University School of Medicine
Publicaties en nuttige links
De persoon die verantwoordelijk is voor het invoeren van informatie over het onderzoek stelt deze publicaties vrijwillig ter beschikking. Dit kan gaan over alles wat met het onderzoek te maken heeft.
Studie record data
Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.
Bestudeer belangrijke data
Studie start
1 september 2010
Primaire voltooiing (Verwacht)
1 juni 2014
Studie voltooiing (Verwacht)
1 juni 2014
Studieregistratiedata
Eerst ingediend
2 februari 2009
Eerst ingediend dat voldeed aan de QC-criteria
15 maart 2010
Eerst geplaatst (Schatting)
16 maart 2010
Updates van studierecords
Laatste update geplaatst (Schatting)
10 februari 2014
Laatste update ingediend die voldeed aan QC-criteria
6 februari 2014
Laatst geverifieerd
1 februari 2014
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- 0911-50
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