A 680,000-person megastudy of nudges to encourage vaccination in pharmacies.
Proc Natl Acad Sci U S A
; 119(6)2022 02 08.
Article
in English
| MEDLINE | ID: covidwho-1671752
ABSTRACT
Encouraging vaccination is a pressing policy problem. To assess whether text-based reminders can encourage pharmacy vaccination and what kinds of messages work best, we conducted a megastudy. We randomly assigned 689,693 Walmart pharmacy patients to receive one of 22 different text reminders using a variety of different behavioral science principles to nudge flu vaccination or to a business-as-usual control condition that received no messages. We found that the reminder texts that we tested increased pharmacy vaccination rates by an average of 2.0 percentage points, or 6.8%, over a 3-mo follow-up period. The most-effective messages reminded patients that a flu shot was waiting for them and delivered reminders on multiple days. The top-performing intervention included two texts delivered 3 d apart and communicated to patients that a vaccine was "waiting for you." Neither experts nor lay people anticipated that this would be the best-performing treatment, underscoring the value of simultaneously testing many different nudges in a highly powered megastudy.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Pharmacies
/
Influenza Vaccines
/
Vaccination
/
Immunization Programs
Type of study:
Cohort study
/
Experimental Studies
/
Prognostic study
/
Randomized controlled trials
Topics:
Vaccines
Limits:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Language:
English
Year:
2022
Document Type:
Article
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