Traumatic Brain Injury Rehabilitation Comparative Effectiveness Research: Introduction to the Traumatic Brain Injury–Practice Based Evidence Archives Supplement

This supplement of the Archives of Physical Medicine and Rehabilitation is devoted to the Traumatic Brain Injury–Practice Based Evidence study, the first practice-based evidence study, to our knowledge, of traumatic brain injury rehabilitation. The purpose of this preface is to place this study in the broader context of comparative effectiveness research and introduce the articles in the supplement.