[Skip to Content]
[Skip to Content Landing]

Effect of Text Message Reminders and Vaccine Reservations on Adherence to a Health System COVID-19 Vaccination PolicyA Randomized Clinical Trial

Educational Objective
To identify the key insights or developments described in this article
Key Points

Question  Can a behavioral nudge delivered through text messages with a reserved date for vaccination over a 2-week period accelerate employee adherence with a health system COVID-19 vaccination policy?

Findings  In this randomized clinical trial of 2000 participants, the behavioral nudge delivered through text messages significantly increased adherence to the health system COVID-19 vaccination policy by 4.9 percentage points compared with the control group during the 2-week intervention period. At the 4-week time point near the vaccination policy deadline, there was no longer a significant difference in the overall adherence rate between groups.

Meaning  This randomized clinical trial found that a behavioral nudge delivered by text message with a reserved date for vaccination accelerated adherence to a health system COVID-19 vaccination policy; however, other approaches may be needed to change overall adherence rates by the time of the policy deadline.

Abstract

Importance  Many organizations implemented COVID-19 vaccination requirements during the pandemic, but the best way to increase adherence to these policies is unknown.

Objective  To evaluate if behavioral nudges delivered through text messages could accelerate adherence to a health system’s COVID-19 vaccination policy.

Design, Setting, and Participants  This randomized clinical trial was conducted within Ascension health system from October 11 to November 8, 2021. Participants included health system employees in the Midwest or South US who were not adherent with the vaccination policy 1 month before its deadline. Data were analyzed from November 17, 2021, to February 25, 2022.

Interventions  Participants were randomly assigned to control or to receive a text message intervention that stated a vaccine had been reserved for the participant, with a scheduled date for vaccination within a 2-week period. Participants could reschedule to a different date within the period or upload a copy of their vaccination card. Follow-up text message reminders were sent the day before and the day of the appointment.

Main Outcomes and Measures  The primary outcome was adherence to the health system’s vaccination policy during the 2-week intervention. Secondary outcomes included time to vaccination during a 4-week follow-up period.

Results  The sample included 2000 participants (mean [SD] age, 36.4 [12.3] years; 1724 [86.2%] women), with 1000 participants randomized to the control group and 1000 participants randomized to the intervention group. Overall, there were 164 Hispanic participants (8.2%), 46 non-Hispanic Asian participants (2.3%), 202 non-Hispanic Black participants (10.1%), and 1418 non-Hispanic White participants (70.9%). By the end of the 2-week intervention, 363 participants in the text message nudge group (36.3%) and 318 participants in the control group (31.8%) were adherent with the vaccination policy, representing a significant increase of 4.9 (95% CI, 0.8 to 9.1) percentage points in adjusted analyses comparing the nudge group with the control group (P = .02). Among participants who became adherent by the end of the 4-week follow-up period, the text message nudge significantly reduced time to adherence by a mean of 2.4 (95% CI, 2.1 to 4.7) days (P < .001) and a median of 5.0 (95% CI, 2.5 to 7.7) days (P < .001) compared with the control group. At 4 weeks, overall vaccination adherence was no longer different between groups (control: 477 participants [47.7%]; intervention: 472 participants [47.2%]).

Conclusions and Relevance  This randomized clinical trial found that a behavioral nudge delivered through text messages accelerated adherence to a health system’s COVID-19 vaccination policy but did change overall adherence by the time of the policy deadline.

Trial Registration  ClinicalTrials.gov Identifier: NCT05037201

Sign in to take quiz and track your certificates

Buy This Activity

JN Learning™ is the home for CME and MOC from the JAMA Network. Search by specialty or US state and earn AMA PRA Category 1 Credit(s)™ from articles, audio, Clinical Challenges and more. Learn more about CME/MOC

CME Disclosure Statement: Unless noted, all individuals in control of content reported no relevant financial relationships. If applicable, all relevant financial relationships have been mitigated.

Article Information

Accepted for Publication: May 29, 2022.

Published: July 20, 2022. doi:10.1001/jamanetworkopen.2022.22116

Open Access: This is an open access article distributed under the terms of the CC-BY License. © 2022 Patel MS et al. JAMA Network Open.

Corresponding Author: Mitesh S. Patel, MD, MBA, Ascension, 4600 Edmundson Rd, St Louis, MO 63134 (mitesh.patel3@ascension.org).

Author Contributions: Dr. Patel had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.

Concept and design: Patel, Fogel, Habash, Brinson, Price, Yehia.

Acquisition, analysis, or interpretation of data: Patel, Winegar, Horseman, Ottenbacher, Habash, Dukes, Brinson, Price, Masoudi, Cacchione.

Drafting of the manuscript: Patel, Dukes, Brinson.

Critical revision of the manuscript for important intellectual content: Fogel, Winegar, Horseman, Ottenbacher, Habash, Dukes, Brinson, Price, Masoudi, Cacchione, Yehia.

Statistical analysis: Winegar, Horseman, Dukes, Price.

Obtained funding: Patel.

Administrative, technical, or material support: Winegar, Ottenbacher, Dukes, Brinson, Price, Cacchione, Yehia.

Supervision: Patel, Fogel, Winegar, Price.

Conflict of Interest Disclosures: Dr Patel reported receiving personal fees from Catalyst Health, Humana, and GlaxoSmithKline outside the submitted work. No other disclosures were reported.

Funding/Support: This study was funded internally by Ascension.

Role of the Funder/Sponsor: The funder had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.

Data Sharing Statement: See Supplement 3.

AMA CME Accreditation Information

Credit Designation Statement: The American Medical Association designates this Journal-based CME activity activity for a maximum of 1.00  AMA PRA Category 1 Credit(s)™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

Successful completion of this CME activity, which includes participation in the evaluation component, enables the participant to earn up to:

  • 1.00 Medical Knowledge MOC points in the American Board of Internal Medicine's (ABIM) Maintenance of Certification (MOC) program;;
  • 1.00 Self-Assessment points in the American Board of Otolaryngology – Head and Neck Surgery’s (ABOHNS) Continuing Certification program;
  • 1.00 MOC points in the American Board of Pediatrics’ (ABP) Maintenance of Certification (MOC) program;
  • 1.00 Lifelong Learning points in the American Board of Pathology’s (ABPath) Continuing Certification program; and
  • 1.00 credit toward the CME of the American Board of Surgery’s Continuous Certification program

It is the CME activity provider's responsibility to submit participant completion information to ACCME for the purpose of granting MOC credit.

Close
Want full access to the AMA Ed Hub?
After you sign up for AMA Membership, make sure you sign in or create a Physician account with the AMA in order to access all learning activities on the AMA Ed Hub
Buy this activity
Close
Want full access to the AMA Ed Hub?
After you sign up for AMA Membership, make sure you sign in or create a Physician account with the AMA in order to access all learning activities on the AMA Ed Hub
Buy this activity
Close
With a personal account, you can:
  • Access free activities and track your credits
  • Personalize content alerts
  • Customize your interests
  • Fully personalize your learning experience
Education Center Collection Sign In Modal Right
Close

Name Your Search

Save Search
With a personal account, you can:
  • Access free activities and track your credits
  • Personalize content alerts
  • Customize your interests
  • Fully personalize your learning experience
Close
Close

Lookup An Activity

or

My Saved Searches

You currently have no searches saved.

Close

My Saved Courses

You currently have no courses saved.

Close