Table 1. Risk/benefit carotid endarterectomy score for symptomatic carotid stenosis. The authors calculated that for CEA in patients with 70–99% SCS, the number need to treat (NNT) was 100 for predictive scores <4 points, but only 3 for scores >4 points (16).

Item	Point
Cerebral rather than an ocular ischemic event	+1
Irregular plaque	+1
Cerebrovascular event in the previous 2 moths	+1
Female sex	−0.5
70–79% stenosis	0
80–89% stenosis	+1
90–99% stenosis	+2
Peripheral vascular disease	−0.5
Systolic blood pressure >180 mmHg	−0.5

CEA, carotid endarterectomy; SCS, symptomatic carotid stenosis.