NCT03759236

Brief Summary

Background: Prevention of cervical cancer and genital warts could be achieved by immunization with the prophylactic human papillomavirus (HPV) vaccines commercially available. However, in the U.S. only 38% of females and 14% of males in the recommended age group (9-26 years) receive the complete, three-dose HPV vaccine. Because the HPV vaccine is covered under the Vaccine for Children Program, the underinsured and uninsured have no-cost access. Nonetheless, data from Los Angeles county suggest that HPV vaccination rates among the uninsured and underinsured groups are significantly lower than the national average, likely related to knowledge of the vaccine, transportation, number of doses and concern of side effects. Aim: To evaluate the efficacy of health oriented text messaging to increase HPV vaccine uptake versus standard health messaging (Center for Disease Control and Prevention (CDC) HPV vaccine information flyers). Hypothesis: The investigators hypothesize that receiving general health messaging, including messages regarding the benefits of the HPV vaccine, will increase HPV vaccine uptake. Text messaging will also be more successful in reaching the uninsured and underinsured populations than will traditional flyers/information pamphlets used in clinics. Methods: A cluster randomized trial design will be used to recruit participants from four clinics in Los Angeles County which offer pediatric vaccination to uninsured and underinsured children. The sample will include women aged 18-45 years of age. Two of the sites will be randomized to the text messaging arm and the other clinic will be randomized to the control arm (standard messaging: CDC flyers and pamphlets available for patients at the clinic). Outcome measures will be HPV vaccinations rates at those clinics. Rates will be defined into groups who received 1 dose, 2 doses and 3 doses. Anticipated Results: The investigators expect to find statistically significant higher HPV vaccination rates among children and women in the text messaging study arm compared to the control arm. Implications and Future Studies: This pilot study will give us preliminary data to submit a larger randomized controlled trial to examine the efficacy of text messaging.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
3

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Apr 2018

Typical duration 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

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 25, 2018

Completed
7 months until next milestone

First Submitted

Initial submission to the registry

November 28, 2018

Completed
1 day until next milestone

First Posted

Study publicly available on registry

November 29, 2018

Completed
1.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 19, 2020

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 19, 2020

Completed
Last Updated

April 1, 2025

Status Verified

February 1, 2020

Enrollment Period

1.8 years

First QC Date

November 28, 2018

Last Update Submit

March 26, 2025

Conditions

Keywords

Health MessagingHealth EducationHuman Papilloma VirusHPV Vaccination

Outcome Measures

Primary Outcomes (1)

  • HPV Vaccination Rate

    In both arms of the study, we will collect data on the number of females aged 9- 26 years who made any visit to the clinic (denominator) and the number of females aged 9-26 vaccinated (numerator). Vaccination rates will be defined into groups who received at least 1 dose, compared to receiving none. We will also examine those receiving at least 2 doses vs 1 vs none.

    1 year

Study Arms (2)

Health Messaging via SMS

EXPERIMENTAL

Clinics randomized to this arm will receive the health messaging via SMS intervention. Flyers and information cards will be made available in all exam rooms and the waiting room, which contain information about the health messaging program. Patients must voluntarily elect to enroll in the program using their mobile device. Patients who enroll will receive a variety of health messages on topics including HPV Vaccine, Cervical Cancer screening, Birth Control options, Menstrual Problems, diet and exercise. Text messages are sent out using a third party interface, Twilio, at a frequency of 2 times each week for a duration of 1 year. These are one-way messages which only allow for texts to be sent to the participant.

Behavioral: Health Messaging via SMS

CDC Pamphlets

ACTIVE COMPARATOR

The clinic randomized to this control arm will receive standard Center for Disease Control health pamphlets about the HPV Vaccine. Flyers are posted in the clinic waiting room and exam room.

Behavioral: CDC Health Pamphlets

Interventions

This intervention aims to provide health education on topics including HPV Vaccination, Cervical Cancer screening, contraceptive methods, menstrual problems, diet and exercise geared towards women with children of vaccination age.

Health Messaging via SMS

This intervention aims to provide health education on the HPV Vaccination to women with children of vaccination age.

CDC Pamphlets

Eligibility Criteria

Age21 Years+
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Women who are patients at the clinic
  • Age 21+
  • Have a working mobile phone with SMS capability

You may not qualify if:

  • Male
  • \<21 years of age
  • Do not have a working mobile phone with SMS capability

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of California Los Angeles

Los Angeles, California, 90095, United States

Location

MeSH Terms

Conditions

Health Education

Condition Hierarchy (Ancestors)

Adherence InterventionsMedication AdherencePatient CompliancePatient Acceptance of Health CareTreatment Adherence and ComplianceHealth BehaviorBehavior

Study Officials

  • Anna-Barbara Moscicki, MD

    University of California, Los Angeles

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Model Details: Two clinics are randomized to receive the health messaging via SMS and the third clinic is randomized to receive standard CDC health education materials.
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

November 28, 2018

First Posted

November 29, 2018

Study Start

April 25, 2018

Primary Completion

February 19, 2020

Study Completion

February 19, 2020

Last Updated

April 1, 2025

Record last verified: 2020-02

Data Sharing

IPD Sharing
Will not share

Locations