NCT05365048

Brief Summary

In the United State, there are millions of US teens who are not vaccinated against the human papillomavirus (HPV) putting them at risk of getting HPV-related cancers. Although there are clinical guidelines recommending the HPV vaccine and interventions encouraging parents to vaccinate their children to prevent HPV-related cancers, the vaccination rate for teens remains low according to a 2018 national survey. Survey data shows that HPV vaccine complete series coverage for teens aged 13-15 years was 50%, far below the 80% target of Healthy People 2020. Receiving a strong provider recommendation is the most powerful strategy for improving HPV vaccine rates. Yet, little is known about how to include provider recommendations and other important factors into an intervention to improve the HPV vaccination rates. Studies show there are provider, patient and system-level barriers in the initiation and completion of HPV vaccine series among 9-12 years old children. Barriers to the HPV vaccine also differ across demographic subgroups, communities, and clinics. Interventions that address only one component are not responsive to site barriers and as effective as one that addresses multiple components and site-specific barriers. This study uses a 3-arm cluster randomized controlled trial (RCT) to compare three implementation strategies to improve provider recommendations on the HPV vaccine. Two of the implementation strategies (local-tailored and prescribed strategy) utilize a multilevel approach. The three implementation strategies of interest are (1) a "local-tailored" implementation strategy, co-designed with local care teams to address local barriers and contexts (2) A "prescribed" strategy, most commonly used by health systems, that involves pre-specified interventions addressing pre-selected vaccination barriers and (3) usual standard of care where there are no research-led activities. We will use surveys, interviews, and electronic health records to evaluate the three implementation strategies and their impact on improving HPV vaccination rates. The study surveys and interviews will include pediatric providers, nurses, administrators, staff members, and parents of HPV vaccine-eligible children (9-12 years old). Successful implementation will be defined as improvement in HPV vaccination rates (primary outcome), strengthening provider recommendation (secondary outcome), and the cost-effectiveness of the implementation strategy.

Trial Health

77
On Track

Trial Health Score

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

Enrollment
301,201

participants targeted

Target at P75+ for not_applicable

Timeline
2mo left

Started Mar 2022

Longer than P75 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 Progress97%
Mar 2022Jun 2026

Study Start

First participant enrolled

March 21, 2022

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

April 28, 2022

Completed
11 days until next milestone

First Posted

Study publicly available on registry

May 9, 2022

Completed
3.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2025

Completed
6 months until next milestone

Study Completion

Last participant's last visit for all outcomes

June 30, 2026

Expected
Last Updated

May 20, 2025

Status Verified

May 1, 2025

Enrollment Period

3.8 years

First QC Date

April 28, 2022

Last Update Submit

May 15, 2025

Conditions

Keywords

Human PapillomavirusVaccineLocal Tailoring4 PillarsPrescribed StrategyImplementation StrategyProvider Recommendation

Outcome Measures

Primary Outcomes (2)

  • Proportion of children 9-12 years old who received the first dose of the HPV vaccine -EMR

    9-12 years old who received the first dose of the HPV vaccine at pre-intervention. Data obtained from electronic medical record (EMR)

    Year 1

  • Proportion of children 9-12 years old who received the first dose of the HPV vaccine - EMR

    9-12 years old who received the first dose of the HPV vaccine at post-intervention

    Year 4

Secondary Outcomes (2)

  • Provider Recommendation - survey

    Year 1

  • Provider Recommendation - survey

    Year 4

Other Outcomes (9)

  • HPV vaccine series completion - EMR

    Year 1 through Year 4

  • Time taken to recommend the HPV vaccine - survey

    Year 1

  • Time taken to recommend the HPV vaccine - survey

    Year 4

  • +6 more other outcomes

Study Arms (3)

Local Tailoring

EXPERIMENTAL

The intervention arm will include 20 clinics randomly assigned to the intervention arm. All physicians, nurses, department administrator and other staff members from the pediatric departments randomized to this arm will be included in the study, as well as parents of HPV vaccine eligible children (9-12 years old) who had one or more visits with their pediatric provider during the data collection period.

Other: Local Tailoring implementation strategy

Prescribed Strategy

EXPERIMENTAL

The intervention arm will include 20 clinics randomly assigned to the intervention arm.. All physicians, nurses, department administrator,s and other staff members from the pediatric departments randomized to this arm will be included in the study, as well as parents of HPV vaccine eligible children (9-12 years old) who had one or more visits with their pediatric provider during the data collection period.

Other: Prescribed Strategy

Usual Care

NO INTERVENTION

The intervention arm will include 20 clinics randomly assigned to the usual care arm. All physicians, nurses, department administrators,s and other staff members from the pediatric departments randomized to this arm will be included in the study, as well as parents of HPV vaccine eligible children (9-12 years old) who had one or more visits with their pediatric provider during the data collection period.

Interventions

The "local-tailored" approach will be guided by a structured process involving the following: (1) convening a local HPV vaccine project team, (2) conducting a local diagnostic process to identify top barriers, (3) selecting from a menu of intervention options that will be offered in this study, categorized by core function (i.e., the forms and functions menu) that address top local barriers, and (4) deploying the selected interventions. The barrier assessment and intervention customization are key processes for the local-tailored strategy, which allow clinics to devote resources to respond to unique local barriers in addition to common barriers.

Local Tailoring

The prescribed strategy is the standard implementation approach used by most health systems. Our prescribed approach will be guided by the evidence-based, award-winning 4 Pillars™ Practice Transformation Program for improving vaccination rates in the outpatient setting. The 4 Pillars™ address 4 main "functions", i.e., convenience, communication, office systems, and motivation to guide the selection of interventions. For adolescent HPV vaccination, the 4 Pillars has demonstrated moderate effectiveness.

Prescribed Strategy

Eligibility Criteria

Age21 Years - 70 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • All KPSC pediatric clinics.
  • All providers (physicians, nurses, and medical assistants) and department administrators from the pediatric department.
  • Parents of HPV vaccine-eligible children (9-12 years old).

You may not qualify if:

  • Providers and administrators who do not work for the pediatric department
  • Parents of children older than 12 years and/or who did not have a clinic visit in the study period.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Kaiser Permanente Southern California

Pasadena, California, 91101, United States

RECRUITING

Study Officials

  • Erin Hahn, PhD

    KPSC Department of Research and Evaluation

    PRINCIPAL INVESTIGATOR
  • Chun R Chao, PhD

    KPSC Department of Research and Evaluation

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Nancy Takahashi Cannnizzaro, PhD

CONTACT

Chunyi Hsu, MPH

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
OTHER
Intervention Model
PARALLEL
Model Details: This prospective study will utilize a cluster randomization design to compare three implementation strategies with outcome measures at the patient, provider and system level. Prior to randomization, clinics will be matched in triads on key attributes that may be associated with implementation success (e.g. geographic location, CFIR constructs, membership, race/ethnicity and baseline HPV vaccine converge) using a SAS algorithm. The 3 clinics matched in a triad will be most like each other in these attributes. The matched triads will be first randomized to determine the timing of their implementation (phase 1 will include 10 triads of 30 clinics) or phase 2 (10 triads of 30 clinics). Within each triad, the 3 clinics will then be randomized to determine which receives the local-tailored strategy ( 20 clinics) vs prescribed ( 20 clinics) vs usual care (20 clinics).
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Research Scientist

Study Record Dates

First Submitted

April 28, 2022

First Posted

May 9, 2022

Study Start

March 21, 2022

Primary Completion

December 31, 2025

Study Completion (Estimated)

June 30, 2026

Last Updated

May 20, 2025

Record last verified: 2025-05

Data Sharing

IPD Sharing
Will not share

Locations