Brief Interventions to Increase HPV Vaccine Acceptance in School-based Health Centers
6 de febrero de 2014 actualizado por: 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.
Descripción general del estudio
Estado
Desconocido
Condiciones
Intervención / Tratamiento
Descripción detallada
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).
Tipo de estudio
Intervencionista
Inscripción (Anticipado)
600
Fase
- No aplica
Contactos y Ubicaciones
Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.
Ubicaciones de estudio
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Texas
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Galveston, Texas, Estados Unidos, 77550
- Teen Health Centers
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Criterios de participación
Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.
Criterio de elegibilidad
Edades elegibles para estudiar
11 años a 15 años (Niño)
Acepta Voluntarios Saludables
Sí
Géneros elegibles para el estudio
Todos
Descripción
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
Plan de estudios
Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Tratamiento
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación factorial
- Enmascaramiento: Ninguno (etiqueta abierta)
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
|
Experimental: 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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Experimental: 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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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Gardasil immunization
Periodo de tiempo: 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
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Completion of three dose series of Gardasil
Periodo de tiempo: Three years
|
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
Periodo de tiempo: 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
Periodo de tiempo: 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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Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Colaboradores
Investigadores
- Investigador principal: Vaughn I Rickert, PsyD, Indiana University School of Medicine
Publicaciones y enlaces útiles
La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.
Fechas de registro del estudio
Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.
Fechas importantes del estudio
Inicio del estudio
1 de septiembre de 2010
Finalización primaria (Anticipado)
1 de junio de 2014
Finalización del estudio (Anticipado)
1 de junio de 2014
Fechas de registro del estudio
Enviado por primera vez
2 de febrero de 2009
Primero enviado que cumplió con los criterios de control de calidad
15 de marzo de 2010
Publicado por primera vez (Estimar)
16 de marzo de 2010
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
10 de febrero de 2014
Última actualización enviada que cumplió con los criterios de control de calidad
6 de febrero de 2014
Última verificación
1 de febrero de 2014
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- 0911-50
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