Table 2.

Carotid plaque imaging findings

	Ipsilateral cervical ICA	Contralateral cervical ICA	p-value*
ESUS (n=96)
Plaque thickness ≥ 3mm, no. (%)	40 (42%)	28 (29%)	0.03
Stenosis (%), median (IQR)	0 (0–2.5)	0 (0–2.5)	0.76
Total plaque thickness, mean (SD)	2.5 ± 1.5	2.2 ± 1.6	0.02
Calcified plaque thickness, mean (SD)	1.4 ± 1.5	1.1 ± 1.5	0.01
Plaque ulceration, no. (%)	1 (1%)	5 (5%)	0.10
Atrial fibrillation (n=99)
Plaque thickness ≥ 3 mm, no. (%)	40 (40%)	35 (35%)	0.41
Stenosis (%), median (IQR)	0(0–15)	0(0–10)	0.45
Total plaque thickness, mean (SD)	2.6 ± 1.5	2.4 ± 1.5	0.30
Calcified plaque thickness, mean (SD)	1.8 ± 1.6	1.7 ± 1.6	0.92
Plaque ulceration, no. (%)	3 (3%)	2 (2%)	0.65

^*All tested using paired comparisons

ICA denotes internal carotid artery, ESUS embolic stroke of undetermined source, IQR interquartile range and SD standard deviation.