NCT03628885

Brief Summary

The purpose of this study is to investigate mother's attitudes about vaccinating their 11-14 year old children against the human papillomavirus (HPV). Among mothers who do not plan to vaccinate their child, the investigators will assess the influence of brief videos tailored to mothers' questions and concerns. Mothers will be randomized to one of three arms: 1. General video message about vaccination; 2. General message plus a brief video addressing the mother's primary concern; or 3. General message plus videos address all of mother-indicated concerns. The outcome of interest is intention to vaccinate. Our hypothesis is that the tailored videos will lead to increased intention to vaccinate.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
908

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Sep 2018

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

August 7, 2018

Completed
7 days until next milestone

First Posted

Study publicly available on registry

August 14, 2018

Completed
28 days until next milestone

Study Start

First participant enrolled

September 11, 2018

Completed
16 days until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 27, 2018

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

September 27, 2018

Completed
6 months until next milestone

Results Posted

Study results publicly available

April 2, 2019

Completed
Last Updated

April 2, 2019

Status Verified

July 1, 2018

Enrollment Period

16 days

First QC Date

August 7, 2018

Results QC Date

December 20, 2018

Last Update Submit

April 1, 2019

Conditions

Outcome Measures

Primary Outcomes (1)

  • Intention to Vaccinate Against HPV in the Next 12 Months

    Each parent will be asked to respond to this question. The response will be scaled from 1-10 in terms of parental intent regarding vaccination, with higher scores meaning greater parental intent to vaccinate children.

    Immediately after video intervention has been administered

Study Arms (3)

General Vaccine Information

NO INTERVENTION

Brief (47 second) animated informational video about vaccines recommended for all young adolescents.

Top Concern Tailored Intervention

EXPERIMENTAL

Intervention includes the General Vaccine Information video plus a brief (\< 50 sec) animated video address the parent's top ranked question or concern from the provided list of possible concerns: 1. "I need more information about the vaccine"; 2. "My child is too young"; 3. "I am concerned about the long-term health effects or safety of the vaccine"; 4. "My child's health care provider did not recommend it or said my child could wait"; 5. "The vaccine is not required for school"; 6. "Other / none of the above". For those indicating #6, they will receive the same video as those indicating #1 (need more information).

Behavioral: Top Concern Tailored Intervention

All Concerns Tailored Intervention

EXPERIMENTAL

Intervention includes the General Vaccine Information video plus one or more brief (\< 50 sec) animated videos that address all of the parent's indicated question or concern from the provided list of possible concerns: 1. "I need more information about the vaccine"; 2. "My child is too young"; 3. "I am concerned about the long-term health effects or safety of the vaccine"; 4. "My child's health care provider did not recommend it or said my child could wait"; 5. "The vaccine is not required for school"; 6. "Other / none of the above".

Behavioral: All Concerns Tailored Intervention

Interventions

General Vaccine Information video plus a brief (\< 50 sec) animated video address the parent's top ranked question or concern from the provided list of possible concerns.

Top Concern Tailored Intervention

General Vaccine Information video plus one or more brief (\< 50 sec) animated videos that address all of the parent's indicated question or concern from the provided list of possible concerns.

All Concerns Tailored Intervention

Eligibility Criteria

Age18 Years+
Sexfemale(Gender-based eligibility)
Gender Eligibility DetailsMothers or female guardians of children 11-14 years of age
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • years of age or older
  • Lives in one of 26 US states with lower rates of HPV vaccination (New Jersey, Virginia, West Virginia, Alabama, Florida, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee, Indiana, Minnesota, Ohio, Arkansas, Louisiana, New Mexico, Oklahoma, Kansas, Missouri, Montana, South Dakota, Utah, Wyoming, Idaho, Texas, Iowa)
  • Mother or female legal guardian of at least one child aged 11-14 years
  • Able to read and understand English
  • Target child must not have received any doses of HPV vaccine
  • The mother/respondent must indicate that she is not sure that she will vaccinate the target child in the next year.

You may not qualify if:

  • Under 18 years of age
  • Not a mother or female legal guardian of at least one child ages 11-14 years
  • Not living in the United States or in one of the above designated states within the U.S.
  • Not able to understand or read English
  • Target child has already received at least 1 dose of HPV vaccine
  • The mother/respondent indicates (before the intervention) that she definitely intends to vaccinate the target child with HPV vaccine in the next year.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Indiana University

Indianapolis, Indiana, 46202, United States

Location

Related Publications (2)

  • Srivastava T, Head KJ, O'Dell SM, Feemster KA, Panozzo CA, Zimet GD, Kornides ML. Characterizing U.S. mothers with high human papillomavirus vaccine intent yet unvaccinated adolescents. Prev Med. 2023 Apr;169:107472. doi: 10.1016/j.ypmed.2023.107472. Epub 2023 Feb 26.

  • Panozzo CA, Head KJ, Kornides ML, Feemster KA, Zimet GD. Tailored Messages Addressing Human Papillomavirus Vaccination Concerns Improves Behavioral Intent Among Mothers: A Randomized Controlled Trial. J Adolesc Health. 2020 Aug;67(2):253-261. doi: 10.1016/j.jadohealth.2020.01.024. Epub 2020 Mar 18.

Limitations and Caveats

A limitation of this trial is that the outcome is intention to vaccinate, rather than actual vaccination.

Results Point of Contact

Title
Dr. Gregory Zimet
Organization
Indiana University

Study Officials

  • Gregory D Zimet, PhD

    Indiana University

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Masking Details
Intervention videos delivered via anonymous online surveys through Survey Sampling International. Randomization to condition is built into the online survey. Participants will not know to which condition they will be randomized. Investigators are blinded by virtue of the built in randomization and anonymity of the survey.
Purpose
PREVENTION
Intervention Model
FACTORIAL
Model Details: Factorial Assignment
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 7, 2018

First Posted

August 14, 2018

Study Start

September 11, 2018

Primary Completion

September 27, 2018

Study Completion

September 27, 2018

Last Updated

April 2, 2019

Results First Posted

April 2, 2019

Record last verified: 2018-07

Data Sharing

IPD Sharing
Will not share

Locations