Summary / conclusions The SCAT is the most widely accepted and deployable sport concussion assessment and screening tool currently available .
There is some degree of support for using the SCAT2/SCAT3 and ChildSCAT3 in the evaluation of SRC , with and without baseline data .
The addition of an oculomotor examination seems indicated , although the most valid method for assessing oculomotor function is not clear .
Video-observable signs of concussion show promise , but there is insufficient evidence to warrant widespread use at this time
Objectives Several iterations of the Sport Concussion Assessment Tool ( SCAT ) have been published over the past 16 years .
Our goal was to systematic ally review the literature related to the SCAT and provide recommendations for improving the tool .
Use of the King–Devick test for sideline concussion screening in junior rugby league
AIM To determine whether the King-Devick ( K-D ) test used as a sideline test in junior rugby league players over 12 matches in a domestic competition season could identify witnessed and incidentally identified episodes of concussion . METHODS A prospect i ve observational cohort study of a club level junior rugby league team ( n=19 ) during the 2014 New Zeal and competition season involved every player completing two pre-competition season baseline trials of the K-D test .  Players removed from match participation , or who reported any signs or symptoms of concussion were assessed on the sideline with the K-D test and referred for further medical assessment . Players with a pre- to post-match K-D test difference > 3s were referred for physician evaluation . RESULTS The baseline test-retest reliability of the K-D test was high ( rs=0.86 ; p<0.0001 ) . Seven concussions were medically identified in six players who recorded pre- to post-match K-D test times greater than 3s ( mean change of 7.4s ) . Post-season testing of players demonstrated improvement of K-D time scores consistent with learning effects of using the K-D test ( 67.7s vs. 62.2s ) . DISCUSSION Although no witnessed concussions occurred during rugby play , six players recorded pre- to post-match changes with a mean delay of 4s result ing in seven concussions being subsequently confirmed post-match by health practitioners . All players were medically managed for a return to sports participation . CONCLUSION The K-D test was quickly and easily administered making it a practical sideline tool as part of the continuum of concussion assessment tools for junior rugby league players
Summary / conclusions The SCAT is the most widely accepted and deployable sport concussion assessment and screening tool currently available .
There is some degree of support for using the SCAT2/SCAT3 and ChildSCAT3 in the evaluation of SRC , with and without baseline data .
The addition of an oculomotor examination seems indicated , although the most valid method for assessing oculomotor function is not clear .
Video-observable signs of concussion show promise , but there is insufficient evidence to warrant widespread use at this time
Objectives Several iterations of the Sport Concussion Assessment Tool ( SCAT ) have been published over the past 16 years .
Our goal was to systematic ally review the literature related to the SCAT and provide recommendations for improving the tool .