Planning Message Recommending Same Time/Location as Last Vaccine

Not Applicable

Completed

• Conditions: COVID-19
• Interventions: Behavioral: COVID Booster text messages

• Registration Number: NCT05612386
• Lead Sponsor: University of Pennsylvania

Brief Summary

This experiment is part of a megastudy with a total of ten experimental conditions and a holdout control condition to which patients will be randomly assigned. The focal comparison in this experiment is between a message suggesting the same day of the week, at the same time of day, and at the same pharmacy location as their last vaccination and a control message telling patients that an updated COVID booster vaccine is waiting for them. The intervention testing if text messages encouraging vaccination by suggesting patients receive a shot on the same day of the week, at the same time of day, and at the same pharmacy location as their last vaccination will produce more vaccinations than otherwise identical messages.

Detailed Description

Not available

Study Timeline

• Study Start: 2022-11-03
• Study First Submitted: 2022-11-03
• Study First Submitted QC: 2022-11-03
• Study First Posted: 2022-11-10
• Primary Completion: 2022-12-08
• Study Completion: 2023-02-06
• Status Verified: 2023-03
• Last Update Submitted: 2023-03-01
• Last Update Posted: 2023-03-03

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 520000

Inclusion Criteria

Not provided

Exclusion Criteria

1. The patient unsubscribed from texts before the send date and time of the patient's SMS/MMS message
2. The patient received a bivalent COVID booster before the send date and time of the patient's SMS/MMS message.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Control condition with "waiting for you" message	COVID Booster text messages	This control condition will use the text message that the investigators found to be the best performing in their last mega-study of vaccine text messages to recommend a COVID vaccination.
Planning message recommending same time/location as last vaccination	COVID Booster text messages	This condition will use a text message recommending the same time and location as the participant's last vaccination to get a COVID vaccination.

Primary Outcome Measures

Name	Time	Method
COVID bivalent booster receipt	During the 30 days after receiving the SMS/MMS intervention	Whether patients receive a bivalent COVID booster at the pharmacy in question

Secondary Outcome Measures

Name	Time	Method
COVID bivalent booster receipt	90 days after receiving the SMS/MMS intervention	Whether patients receive a bivalent COVID booster at the pharmacy in question

Trial Locations

Locations (1)

University of Pennsylvania; 🇺🇸 Philadelphia, Pennsylvania, United States