While this approach has led to great strides in under-standing how treatment works, it may not be practical in the real-world setting of the emergency department and may generate studies with little external validity.
This approach might not be practical in a real live emergency department.
The approach may generate studies with excellent external validity
A young boy is standing on a sidewalk.
man sleeping under a tree
The weather is going to be a little bit cold, and I feel a bit anxious.
The DOD insists that all courses will need to be taken in person under strict supervision.
The people are standing around doing nothing.
A girl climbs a tree.