Executive summary A concerted effort to tackle the global health problem posed by traumatic
brain injury (TBI) is long overdue. TBI is a public health challenge of vast, but insufficiently …

CONTEXT: Given radiation-and sedation-associated risks, there is uncertainty about which
children with head trauma should receive cranial computed tomography (CT) scanning. A …

Importance Approximately one-third of children experiencing acute concussion experience
ongoing somatic, cognitive, and psychological or behavioral symptoms, referred to as …

Importance Although concussion treatment guidelines advocate rest in the immediate
postinjury period until symptoms resolve, no clear evidence has determined that avoiding …

OBJECTIVES: Because physicians may have difficulty distinguishing accidental fractures
from those that are caused by abuse, abusive fractures may be at risk for delayed …

Learning curves, which graphically show the relationship between learning effort and
achievement, are common in published education research but are not often used in day-to …

Importance The natural progression of symptom change and recovery remains poorly
defined in children after concussion. Objectives To describe the natural progression of …

Importance Persistent postconcussion symptoms (PPCS) pose long-term challenges and
can negatively affect patients' health-related quality of life (HRQoL). To date, no large …

Purpose To demonstrate how learning curves can describe proficiency improvements
associated with deliberate practice of radiograph interpretation. Method This was a …

I congratulate CMAJ and Boutis and colleagues for a brilliant research paper. 1 Intention-to-
treat analysis is a comparison of the treatment groups that includes all patients as originally …