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

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.