Text Message-Based Nudges Prior to Primary Care Visits to Increase Care Gap Closure

A Pragmatic Randomized Intervention Using Text Messages Prior to Primary Care Visits to Encourage Care Gap Closure: The PRIME Randomized Clinical Trial

Primary care visits are a key aspect of clinical care focused on helping patients to close care gaps related to preventive care such as vaccination, diabetes testing, statin therapy and cancer screening. However, less than 50% of care gaps are closed during these visits and new approaches are needed to prime patients for a discussion during these visits. In this study, the study team will evaluate a health system initiative that uses text messaging to patients in days preceding a primary care visit to prime patients to be amenable to ordering of vaccination, diabetes testing, cancer screening, and statin prescribing.

The United States Preventive Services Task Force has recommended tests and treatments for vaccination, diabetes testing, statin therapy, and cancer screening. These preventive services have been demonstrated to reduce illness and improve quality of care. Yet, more than 50% of open care gaps go unaddressed during primary care visits. Nudges are subtle changes to the way information is framed or choices are offered that can have a significant impact on behavior. In a previous randomized clinical trial, text messages sent to patients prior to primary care visits increased vaccination by up to 11% relative to control. The most effective message told patients the influenza vaccine was "reserved for you," and sent two text messages to patients in the 3 days preceding a primary care appointment.

This study will use a randomized clinical trial to evaluate a health system initiative to improve care gap closure. We will randomly assign primary care practices that use AthenaClinicals electronic health record at the following locations at Ascension's health system: Alabama-Birmingham, Kansas-Wichita, Tennessee-Nashville, Texas-Austin, and Texas-Waco. These practices will have the opportunity to opt-out from the program before randomization occurs.

The text message nudge will be sent to patients 3 days and 1 day prior to a visit with the primary care practices and notify them of up to 3 care gaps based on electronic health record data. Care gaps will be selected based on availability and ranked in this order: influenza vaccination, pneumococcal vaccination, breast cancer screening, colorectal cancer screening, hemoglobin A1 testing, or statin therapy.

The proportion of open care gaps that have a test or treatment completed to address them. Exploratory and only if data is available

Inclusion Criteria: Age 18 or older Have documented consent to communicate electronically Have a visit scheduled with a primary care practice Have at least one open care gap among those in the intervention Exclusion Criteria: No phone number on file to send text messages

Milkman KL, Patel MS, Gandhi L, Graci HN, Gromet DM, Ho H, Kay JS, Lee TW, Akinola M, Beshears J, Bogard JE, Buttenheim A, Chabris CF, Chapman GB, Choi JJ, Dai H, Fox CR, Goren A, Hilchey MD, Hmurovic J, John LK, Karlan D, Kim M, Laibson D, Lamberton C, Madrian BC, Meyer MN, Modanu M, Nam J, Rogers T, Rondina R, Saccardo S, Shermohammed M, Soman D, Sparks J, Warren C, Weber M, Berman R, Evans CN, Snider CK, Tsukayama E, Van den Bulte C, Volpp KG, Duckworth AL. A megastudy of text-based nudges encouraging patients to get vaccinated at an upcoming doctor's appointment. Proc Natl Acad Sci U S A. 2021 May 18;118(20):e2101165118. doi: 10.1073/pnas.2101165118.