The Long-Term Efficacy and Safety of Carotid Artery Stenting among the Elderly: A Single-Center Study in China

Table 2

Clinical endpoints of carotid artery stenting.

Endpoint	Total	Age < 70 years ()	Age ≥ 70 years ()	χ ^2†	value
Stroke or death	14 (16.67%)	4 (7.14%)	10 (35.71%)	/	0.002^∗
Death	12 (14.29%)	3 (5.36%)	9 (32.14%)	/	0.002^∗
Stroke	3 (3.57%)	1 (1.79%)	2 (7.14%)	/	0.256^∗
mRS score < 2	26 (30.95%)	16 (28.57%)	10 (35.71%)	0.446	0.504
Restenosis#	2 (2.78%)	1 (1.89%)	1 (5.26%)	/	0.460^∗

Patients were stratified according to age at surgery (<70 vs. ≥70 years). Data are given as number of events (frequency). mRS: modified Rankin Scale; #: 12 cases were excluded from this subgroup analysis because death occurred prior to other endpoints (<70 years, ; ≥70 years, ); †: statistics according to the chi-square test; /: no χ² value was found; ^∗: value for Fisher’s exact test inadequate for the chi-square test.