NCT06535139

Brief Summary

There are three main objectives of the protocol. First, we will evaluate the added clinical- and cost- effectiveness of parent-targeted motivational aids (reminder/recall and phone-based MI) alone and when combined with community-targeted healthcare access assistance beyond the effects of clinician-targeted training. Second, we will estimate the differential effectiveness of the implementation strategies by patient-level factors (age, race/ethnicity, sex, distance from home to clinic, social vulnerability). Third, we will measure moderation of implementation strategy effectiveness by clinic-level factors (HPV vaccination priority, resources, clinic visit types, scheduling practices, and implementation success). Within 11 rural North Central Florida counties, we will evaluate the layering of evidence-based implementation strategies that progressively addressing clinician, parent, and healthcare access barriers faced by rural communities on HPV vaccination rates among 9- to 12-year-olds. To best address our main question of whether layering complementary strategies continues to increase effects on HPV vaccination, we will test our hypotheses with a three-arm cluster randomized study design of nested strategies. The proposed nested study design optimizes evaluation, causal inference, and scientific rigor by putting the maximum number of clinics towards addressing the layering of strategies. Randomization will occur at the clinic level. All clinics will receive implementation strategy A: clinician-targeted recommendation training. A random 20 of 30 of clinics will also receive facilitation of parent-targeted motivational aids (B) for an implementation strategy package of A+B. Finally, a random half of the clinics who receive A+B will also receive community-targeted healthcare access (C) for a total implementation strategy package of A+B+C. This equates to a three-arm cluster randomized trial in which 10 clinics receive clinician- targeted recommendation training alone (A), 10 clinics receive clinician-targeted recommendation training and parent-targeted motivational aids (A+B), and 10 clinics receive clinician-targeted recommendation training, parent-targeted motivational aids, and community-targeted healthcare access (A+B+C).

Trial Health

77
On Track

Trial Health Score

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

Enrollment
4,630

participants targeted

Target at P75+ for not_applicable

Timeline
14mo left

Started Dec 2024

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

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

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress55%
Dec 2024Jul 2027

First Submitted

Initial submission to the registry

July 30, 2024

Completed
3 days until next milestone

First Posted

Study publicly available on registry

August 2, 2024

Completed
4 months until next milestone

Study Start

First participant enrolled

December 9, 2024

Completed
2.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 1, 2027

Expected
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2027

Last Updated

September 9, 2025

Status Verified

September 1, 2025

Enrollment Period

2.4 years

First QC Date

July 30, 2024

Last Update Submit

September 2, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Initiation of the HPV Vaccine

    Binary measure at the participant level of receipt of one or more does of the HPV vaccine

    24 months

Secondary Outcomes (1)

  • Up to date for the HPV Vaccine

    24 months

Study Arms (3)

Clinician-targeted training

EXPERIMENTAL

All clinicians and nurses will be assigned to participate in a training on how to recommend or discuss the HPV vaccine.

Behavioral: Brief training

Clinician-targeted training and Parent-targeted motivational aids

EXPERIMENTAL

All clinicians and nurses will be assigned to participate in a training on how to recommend or discuss the HPV vaccine. Also, clinics will send reminder/recall messages to parents about the HPV vaccine and offer phone-based motivational interviews.

Behavioral: Brief trainingBehavioral: Parent-targeted motivational aids

Clinician-targeted training, Parent-targeted motivational aids, and Healthcare Access

EXPERIMENTAL

All clinicians and nurses will be assigned to participate in a training on how to recommend or discuss the HPV vaccine. Also, clinics will send reminder/recall messages to parents about the HPV vaccine and offer phone-based motivational interviews. Plus, clinics will have access to healthcare access assistance.

Behavioral: Brief trainingBehavioral: Parent-targeted motivational aidsBehavioral: Healthcare access

Interventions

Brief trainingBEHAVIORAL

Clinicians and nurses will receive a brief training. Each training will have a one-hour didactic and interactive session and follow-up practice sessions. Trainings will focus on providers presenting the HPV vaccine as safe, best if received at 9- to 12-years of age, and prevents cancer.

Clinician-targeted trainingClinician-targeted training and Parent-targeted motivational aidsClinician-targeted training, Parent-targeted motivational aids, and Healthcare Access

Parents will be sent messages via text, phone, or postcard about the HPV vaccine. Parents who do not respond to messages will be offered a phone-based motivational interview session about the HPV vaccine.

Clinician-targeted training and Parent-targeted motivational aidsClinician-targeted training, Parent-targeted motivational aids, and Healthcare Access

Healthcare access will involve three components coordinated by UF Health Cancer Center Community Outreach and Engagement Office: transportation assistance to a participating clinic or mobile vaccination clinic, UF mobile vaccination clinic scheduling, and connection to health insurance navigators.

Clinician-targeted training, Parent-targeted motivational aids, and Healthcare Access

Eligibility Criteria

Age8 Years - 99 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

  • Adolescents Age 8- to 12-years-old Visited participating clinic in past year or during study No records of receiving both HPV vaccine doses
  • Providers Provide 9- to 12-year-old patients primary care Practice at a participating clinic

You may not qualify if:

  • Adolescents Out of age range
  • Providers Unwilling to consent

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Florida

Gainesville, Florida, 32608, United States

RECRUITING

MeSH Terms

Interventions

Health Care Quality, Access, and Evaluation

Study Officials

  • Stephanie Staras, PhD

    University of Florida

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Stephanie Staras, PhD

CONTACT

Marta Hansen, MBA

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Model Details: We will test our hypotheses with a three-arm cluster randomized study design of nested strategies. Randomization will occur at the clinic level. All clinics will receive implementation strategy A: clinician-targeted recommendation training. A random 20 of 30 of clinics will also receive facilitation of parent-targeted motivational aids (B) for an implementation strategy package of A+B. Finally, a random half of the clinics who receive A+B will also receive community-targeted healthcare access (C) for a total implementation strategy package of A+B+C. This equates to a three-arm cluster randomized trial in which 10 clinics receive clinician- targeted recommendation training alone (A), 10 clinics receive clinician-targeted recommendation training and parent-targeted motivational aids (A+B), and 10 clinics receive clinician-targeted recommendation training, parent-targeted motivational aids, and community-targeted healthcare access (A+B+C).
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 30, 2024

First Posted

August 2, 2024

Study Start

December 9, 2024

Primary Completion (Estimated)

May 1, 2027

Study Completion (Estimated)

July 1, 2027

Last Updated

September 9, 2025

Record last verified: 2025-09

Data Sharing

IPD Sharing
Will share

Due to the possibility of identifying adolescents, clinicians, or clinic staff, and the study investigator's access to the immunization data only under data sharing agreements, data will be available to users only under a data sharing agreement. Through shared data agreements, de-identified data and documentation will be available to certified researchers once the main findings from the final dataset are released. Investigators will be charged a nonrefundable fee to cover administrative handling chargers and user support. The data-sharing agreements will include a commitment to: (1) use the data only for research; (2) not attempt to identify individuals; (3) secure the data using appropriate computer technology; (4) destroying the data after analyses are completed; and (5) acknowledge the source of the data.

Shared Documents
STUDY PROTOCOL, ICF
Time Frame
Once findings from the main study have been released.
Access Criteria
Investigators will complete a data-sharing agreement and be charged a nonrefundable fee to cover administrative handling chargers and user support.

Locations