Precision Vaccine Promotion in Underserved Populations

Sponsor
University of Southern California (Other)
Overall Status
Not yet recruiting
CT.gov ID
NCT05537441
Collaborator
National Institute on Aging (NIA) (NIH), University of California, Los Angeles (Other), Los Angeles County Department of Public Health (Other)
236,000
1
2
8
29682.9

Study Details

Study Description

Brief Summary

Previous studies have shown that low-cost, behavioral nudges through texting can increase influenza vaccination uptake compared to usual care. However, there are limited studies that evaluate the effect of decreasing barriers to scheduling, especially within safety net populations. The setting for this study, DHS, is the second largest public delivery system in the country and serves approximately half a million diverse patients that are eligible for vaccinations annually. This pilot study (one arm in a larger randomized controlled trial) will examine the effect of text messages highlighting MediCal health plan transportation resources (vs standard text messaging) on influenza vaccination rates in adults during the 2022-2023 flu season.

Condition or Disease Intervention/Treatment Phase
  • Behavioral: Text messaging
N/A

Study Design

Study Type:
Interventional
Anticipated Enrollment :
236000 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Single (Care Provider)
Primary Purpose:
Prevention
Official Title:
Precision Vaccine Promotion in Underserved Populations
Anticipated Study Start Date :
Sep 1, 2022
Anticipated Primary Completion Date :
Mar 1, 2023
Anticipated Study Completion Date :
May 1, 2023

Arms and Interventions

Arm Intervention/Treatment
Active Comparator: Standard Texts

Patients randomized to this study arm will receive a standard text reminding them about the importance of influenza vaccination. The standard texts will include a clinic call back number and patient portal self-scheduling for patients to schedule their influenza vaccines: #FirstName#, your flu shot is ready! Call your clinic at #ExternalRefNo# or visit the LA Health Portal at http://bit.ly/BookFluShot if you want this shot held for you.

Behavioral: Text messaging
Patients will receive up to 3 text messages reminding them about the importance of influenza vaccination during the 2022-2023 flu season.

Experimental: Standard Texts with Transportation messaging

Patients randomized to this study arm will receive standard texts plus transportation messaging including a phone number for patients to reserve transportation to a vaccination appointment based on MediCal health plan transportation resources: #FirstName#, your flu shot is ready! Call your clinic at #ExternalRefNo# or visit the LA Health Portal at http://bit.ly/BookFluShot if you want this shot held for you. You can call #Health Plan Phone Number# to schedule a free ride for your flu shot through #HealthPlanName#.

Behavioral: Text messaging
Patients will receive up to 3 text messages reminding them about the importance of influenza vaccination during the 2022-2023 flu season.

Outcome Measures

Primary Outcome Measures

  1. Vaccination status at the end of the campaign period [6 months]

    Vaccination status at the end of the campaign period, as measured in the CAIR2 State Vaccination Registry to include both inside and outside vaccinations

Secondary Outcome Measures

  1. Heterogeneity of treatment effects for demographics and distance [6 months]

    Heterogeneity of treatment effects for demographic groups and distance to health systems

Eligibility Criteria

Criteria

Ages Eligible for Study:
6 Months and Older
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
No
Inclusion Criteria:
  • Los Angeles County Department of Health Services (LACDHS) primary care patients over 6 months of age
Exclusion Criteria:
  • LACDHS patients less than 6 months of age

Contacts and Locations

Locations

Site City State Country Postal Code
1 Los Angeles County Department of Health Services Los Angeles California United States 90012

Sponsors and Collaborators

  • University of Southern California
  • National Institute on Aging (NIA)
  • University of California, Los Angeles
  • Los Angeles County Department of Public Health

Investigators

  • Principal Investigator: Daniella Meeker, PhD, University of Southern California

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.
Responsible Party:
Daniella Meeker, Associate Professor, University of Southern California
ClinicalTrials.gov Identifier:
NCT05537441
Other Study ID Numbers:
  • HS-22-00479
  • P30AG024968
First Posted:
Sep 13, 2022
Last Update Posted:
Sep 13, 2022
Last Verified:
Sep 1, 2022
Individual Participant Data (IPD) Sharing Statement:
No
Plan to Share IPD:
No
Studies a U.S. FDA-regulated Drug Product:
No
Studies a U.S. FDA-regulated Device Product:
No

Study Results

No Results Posted as of Sep 13, 2022