Table 2:

New DWI lesions after CAS according to age or presenting event and treatment

Variable	Unprotected	Protected	P
Age ≤75 y
No. of lesions	52	138
Median (interquartile range)	1 (0–4)	0 (0–2)	<.01
No. of procedures with any new ipsilateral DWI lesion, n/N (%)	35/52 (67)	64/138 (46)	<.05
Age >75 y
No. of lesions	16	37
Median (interquartile range)	1.5 (0–5.75)	1 (0–4)	.6
No. of procedures with any new ipsilateral DWI lesion, n/N (%)	11/16 (69)	27/10 (73)	.7
Symptomatic patients
No. of lesions	47	87
Median (interquartile range)	2 (0–6)	1 (0–3)	<.05
No. of procedures with any new ipsilateral DWI lesion, n/N (%)	35/47 (74)	49/87 (56)	<.05
Asymptomatic patients
No. of lesions	21	88
Median (interquartile range)	1 (0–2.5)	0 (0–2)	.6
No. of procedures with any new ipsilateral DWI lesion, n/N (%)	11/21 (52)	42/88 (48)	.8

Note:—DWI indicates diffusion-weighted imaging; CAS, carotid angioplasty and stent placement.