@article{ref1,
title="A scoping review of registered clinical studies on mild traumatic brain injury and concussion (2000 to 2019)",
journal="Neurosurgery",
year="2020",
author="Furlan, Julio C. and Radan, Michael M. and Tator, Charles H.",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="BACKGROUND: While many patients with mild traumatic brain injury (mTBI) or concussion recover completely, prolonged postconcussion symptoms remain a challenge for patients and an opportunity for clinical research. This has led to numerous research initiatives over the last 2 decades.  OBJECTIVE: To review the characteristics of clinical studies on management of mTBI/concussion; and to examine their definitions of mTBI/concussion.  METHODS: This scoping review included all clinical studies on diagnosis and management of patients with mTBI/concussion registered at www.clinicaltrials.gov from 2000 to June/2019. The terms &quot;mild TBI/concussion&quot; were used for the primary search. Definitions of mTBI/concussion were obtained from the protocols. When a definition was missing in the website, the study's investigators were contacted for clarification.  RESULTS: There were 225 interventional and 95 observational studies. Most of the studies are focused on treatment (54.7%) or diagnosis (37.5%), while 3.4% examined preventive measures, 2.8% evaluated prognostic instruments, and 1.6% developed registries. Most of the studies in this American database were single-center initiatives led by American and Canadian institutions. The definitions of mTBI/concussion differed widely among 109 studies.  CONCLUSION: The results of this review suggest that most of the clinical studies are focused on diagnosis and non-pharmacological therapies for patients with mTBI/concussion. The large number of differing definitions of mTBI/concussion among the studies creates significant limitations when comparing studies. The requirements for registering research protocols on mTBI/concussion should include the necessity to state the definition being used. There is a need for consensus on a uniform definition of concussion.<p /> <p>Language: en</p>",
language="en",
issn="0148-396X",
doi="10.1093/neuros/nyaa151",
url="http://dx.doi.org/10.1093/neuros/nyaa151"
}