Name	Components			Sensitivity (% [95% CI])	Specificity (% [95% CI])	LR (95% CI)
Cincinnati Prehospital Stroke Scale¹⁵	Facial paralysis; arm drift; abnormal speech			≥ 1 item: 85 (80 to 90)⁸	≥ 1 item: 79 (73 to 85)⁸	0 items: 0.39 (0.25 to 0.61)⁹ ≥ 1 item: 5.5 (3.3 to 9.1)⁹
Face, Arm, Speech Test¹⁶	In patients with Glasgow Coma Scale > 6 and presence of at least one of the following: facial paralysis; arm weakness; speech impairment			82 (76 to 88)⁸	83 (77 to 89)⁸	—
Los Angeles Prehospital Stroke Screen	Presence of all six items is positive for stroke: age > 45 years; no seizure history; symptoms present < 24 hours; ambulatory at baseline; serum glucose > 60 mg per dL (3.35 mmol per L) and < 400 mg per dL (22.20 mmol per L); unilateral deficit of one of three items (facial paresis, arm drift, weak handgrip)			91 (76 to 98)¹⁷	97 (93 to 99)¹⁷	LR+ = 31 (13 to 75)¹⁷ LR− = 0.09 (0.03 to 0.27)¹⁷
Melbourne Ambulance Stroke Screen¹⁸	Presence of all six items is positive for stroke: age > 45 years; no seizure history; symptoms present < 24 hours; ambulatory at baseline; serum glucose > 60 and < 400 mg per dL; presence of = one of four items (facial droop, arm drift, weak handgrip, speech impairment)			90 (81 to 96)	74 (53 to 88)	LR+ = 3.49 (1.83 to 6.63) LR− = 0.13 (0.06 to 0.27)
Recognition of Stroke in the Emergency Room scale⁸	A score of 1 point or higher is positive for stroke*: History of syncope or loss of consciousness (–1 pt) History of seizure activity (–1 pt) New acute onset of: Asymmetric facial weakness (+1 pt) Asymmetric arm weakness (+1 pt) Asymmetric leg weakness (+1 pt) Speech disturbance (+1 pt) Visual field defect (+1 pt)			93 (89 to 97)	83 (77 to 89)	LR+ = 5.49 (3.11 to 9.68) LR− = 0.083 (0.04 to 0.17)
von Arbin¹⁹	All three positive for stroke: acute onset of focal neurologic deficit; onset < seven days prior; no recent head trauma			86 (81 to 91)	99 (98.5 to 99.4)	LR+ = 94 (59 to 152) LR− = 0.14 (0.095 to 0.20)