The score offers better performance than ABCD2 in predicting stroke risk after<unk> , particularly low risk. 
Item Scoring
Clinical Findings:
1. First<unk>  (in lifetime) (2 pt)
2. Symptoms ≥10 minutes (2 pt)
3. Past history of carotid stenosis (2 pt)
4. Already on antiplatelet therapy (3 pt)
5. History of gait disturbance (1 pt)
6. History of unilateral weakness (1 pt)
7. History of vertigo (-3 pts)
8. Initial triage diastolic blood pressure ≥110 mm Hg (3 pt)
9. Dysarthria or aphasia (history or examination) (3 pt)
1. First<unk>  (in lifetime) (2 pt)
2. Symptoms ≥10 minutes (2 pt)
3. Past history of carotid stenosis (2 pt)
4. Already on antiplatelet therapy (3 pt)
5. History of gait disturbance (1 pt)
6. History of unilateral weakness (1 pt)
7. History of vertigo (-3 pts)
8. Initial triage diastolic blood pressure ≥110 mm Hg (3 pt)
9. Dysarthria or aphasia (history or examination) (3 pt)
Investigations in the emergency department:
1.Atrial fibrillation on electrocardiogram (2 pt)
2.Infarction (new or old) on computed tomography (1 pt)
3.Platelet count≥400×109/L (2 pt)
4.Glucose ≥15 mmol/L (3pt)
1.Atrial fibrillation on electrocardiogram (2 pt)
2.Infarction (new or old) on computed tomography (1 pt)
3.Platelet count≥400×109/L (2 pt)
4.Glucose ≥15 mmol/L (3pt)
Risk of stroke at 2d, 7d, and 90d from<unk> 
Although prognostic, evidence-based admission thresholds have not been determined
None with score <3 had CVA within one week in study
Studies have failed to validate the ABCD2 score, and may cause physicians to incorrectly classify ~8% of patients as low risk, with sensitivity of the score for high risk patients only ~30%
Scoring
Age >60yr (1 pt)
BP (SBP >140 OR diastolic >90) (1 pt)
Clinical Features
Isolated speech disturbance (1 pt)
Unilateral weakness (2 pts)
Duration of symptoms
10-59 min (1 pt)
>60 min (2 pts)
Diabetes mellitus (1 pt)
Isolated speech disturbance (1 pt)
Unilateral weakness (2 pts)
10-59 min (1 pt)
>60 min (2 pts)
According to the 2018 Canadian Heart and Stroke Guideline, the Clinical component of the ABCD2 score is the most important prognostic feature
Very high risk for recurrent stroke are the following symptoms that have occurred within the last 48 hours<unk> , fluctuating or persistent unilateral weakness (face, arm and/or leg)<unk> , fluctuating or persistent language/speech disturbance
And/or fluctuating or persistent symptoms without motor weakness or language/speech disturbance
Very high risk for recurrent stroke are the following symptoms that have occurred within the last 48 hours<unk> , fluctuating or persistent unilateral weakness (face, arm and/or leg)<unk> , fluctuating or persistent language/speech disturbance
And/or fluctuating or persistent symptoms without motor weakness or language/speech disturbance<unk> , fluctuating or persistent unilateral weakness (face, arm and/or leg)<unk> , fluctuating or persistent language/speech disturbance
And/or fluctuating or persistent symptoms without motor weakness or language/speech disturbance
Transient ischemic attack
Stroke
Ischemic stroke
Seizures/postictal paralysis 
Subarachnoid hemorrhage
Syncope
Hemorrhagic stroke
Subdural hemorrhage