@article{ref1,
title="An observational method to code concussions in the National Hockey League (NHL): the heads-up checklist",
journal="British journal of sports medicine",
year="2014",
author="Hutchison, Michael G. and Comper, Paul and Meeuwisse, Willem H. and Echemendia, Ruben J.",
volume="48",
number="2",
pages="125-129",
abstract="BACKGROUND: Development of effective strategies for preventing concussions is a priority in all sports, including ice hockey. Digital video records of sports events contain a rich source of valuable information, and are therefore a promising resource for analysing situational factors and injury mechanisms related to concussion. AIM: To determine whether independent raters reliably agreed on the antecedent events and mechanisms of injury when using a standardised observational tool known as the heads-up checklist (HUC) to code digital video records of concussions in the National Hockey League (NHL). METHODS: The study occurred in two phases. In phase 1, four raters (2 naïve and 2 expert) independently viewed and completed HUCs for 25 video records of NHL concussions randomly chosen from the pool of concussion events from the 2006-2007 regular season. Following initial analysis, three additional factors were added to the HUC, resulting in a total of 17 factors of interest. Two expert raters then viewed the remaining concussion events from the 2006-2007 season, as well as all digital video records of concussion events up to 31 December 2009 (n=174). RESULTS: For phase 1, the majority of the factors had a κ value of 0.6 or higher (8 of 15 factors for naïve raters; 11 of 15 factors for expert raters). For phase 2, all the factors had a total percent agreement value greater than 0.8 and κ values of >0.65 for the expert raters. CONCLUSIONS: HUC is an objective, reliable tool for coding the antecedent events and mechanisms of concussions in the NHL. Language: en
",
language="en",
issn="0306-3674",
doi="10.1136/bjsports-2012-092059",
url="http://dx.doi.org/10.1136/bjsports-2012-092059"
}