Prehospital stroke scales as screening tools for early identification of stroke and transient ischemic attack

This is the protocol for a review and there is no abstract. The objectives are as follows: Among the currently validated prehospital stroke scales, what is the diagnostic accuracy of the index tests for the diagnosis of stroke in prehospital screening of patients suspected of having a stroke? To assess the influence of the following potential sources of heterogeneity. Patient demographics (e.g. age, gender). Type of event (transient ischemic attack (TIA), ischemic or hemorrhagic). The definition of TIA used by the study. Level of training of paramedic staff. Items from the methodological quality checklist.