181 / 1983
Possible answers
•
Post-op studies (older)
–
Pathological information available
–
Poorer prognosis patients selected for evaluation
•
Pre-op studies (newer)
–
Better control arms (better training)
|
|
181 / 1983
Possible answers
•
Post-op studies (older)
–
Pathological information available
–
Poorer prognosis patients selected for evaluation
•
Pre-op studies (newer)
–
Better control arms (better training)