Fig. 2

Interactions between various recordable definitions of injury. a is based upon that published by Clarsen & Bahr (15), with permission. Where circle size represents the relative number of incidents likely to be registered (not to scale). b builds upon this by incorporating the role of surveillance methods, highlighting: i) the overlap of time loss injuries whereby medical attention is not always sought, and time loss injuries are not always captured by surveillance systems; ii) the overlap of medical attention injuries whereby medical encounters are not always captured or occur outside of the provided medical provider resources; and iii) therefore the importance of not relying on medical attention based surveillance systems alone