Editor’s Capsule Summary
What is already known on this topic
Implementation of validated clinical decision rules such as the Canadian CT Head Rule to address the potential overuse of imaging in head injury has been associated with inconsistent changes in emergency department (ED) practice.
What question this study addressed
Does a multimodal intervention to increase Canadian CT Head Rule adherence affect computed tomography (CT) use in adults with minor head injury?
What this study adds to our knowledge
In nearly 45,000 encounters at 13 community EDs within an integrated health system, intervention was associated with a 5.3% absolute reduction in head CT use.
How this is relevant to clinical practice
This intervention may be associated with a similar modest decrease in head CT if implemented in other settings.