The ABCD and ABCD2 Scores and the Risk of Stroke following a TIA: A Narrative Review

Table 1

Risk scoring systems.

Clinical prediction rule	Components	Score
	Age ≥ 60	1
	Diabetes	1
	Unilateral weakness	1
California rule [9]	Speech impairment	1
	Symptom duration >10 minutes	1
	Total	5
	Age≥60	1
	Elevated blood Pressure	1
	Systolic ≥140 mm Hg
	Diastolic ≥ 90 mm Hg
	Unilateral weakness	2
ABCD rule [10]	Speech impairment	1
	Symptom duration
	≥ 60 minutes	2
	10–59 minutes	1
	< 10 minutes	0
	Total possible score	6
	Age≥60	1
	Elevated blood pressure	1
	Systolic ≥140 mm Hg
	Diastolic ≥90 mm Hg
	Diabetes	1
	Unilateral weakness	2
ABCD2 rule [17]	Speech impairment	1
	Symptom duration
	≥ 60 minutes	2
	10–59 minutes	1
	< 10 minutes	0
	Total possible score	7