The Long-Term Efficacy and Safety of Carotid Artery Stenting among the Elderly: A Single-Center Study in China
Table 3
Results of the univariate and multivariate logistic regression analyses to identify independent risk factors for death after carotid artery stenting.
Risk factor
Total
Survival n (%)
Death n (%)
Univariate logistic regression
Multivariate logistic regression
OR (95% CI)
Wald χ2‡
value
OR (95% CI)
Wald χ2§
-value
Age, years
<70
56
53 (94.64)
3 (5.36)
Reference
Reference
≥70
28
19 (67.86)
9 (32.14)
8.368 (2.048–34.202)
8.748
0.003
20.054 (3.094–129.987)
9.887
0.002
Sex
Male
66
57 (86.36)
9 (13.64)
Reference
Reference
Female
18
15 (83.33)
3 (16.67)
1.267 (0.305–5.267)
0.106
0.745
0.398 (0.032–4.998)
0.510
0.475
Hypertension
55
48 (87.27)
7 (12.73)
0.700 (0.201–2.438)
0.314
0.575
1.263 (0.219–7.285)
0.068
0.794
Diabetes mellitus
15
13 (86.67)
2 (13.33)
0.908 (0.177–4.645)
0.014
0.907
2.573 (0.203–32.634)
0.532
0.466
Alcohol consumption
24
22 (91.67)
2 (8.33)
0.455 (0.092–2.249)
0.934
0.334
0.732 (0.072–7.448)
0.069
0.792
Ischemic heart disease
8
7 (87.50)
1 (12.50)
0.844 (0.094–7.547)
0.023
0.880
0.477 (0.027–8.282)
0.258
0.611
Smoking
40
37 (92.50)
3 (7.50)
0.315 (0.079–1.261)
2.664
0.103
0.524 (0.065–4.241)
0.366
0.545
Multiple stenosis
19
17 (89.47)
2 (10.53)
0.647 (0.129–3.246)
0.28
0.597
0.472 (0.059–3.773)
0.501
0.479
Stenosis degree
50~69%
46
40 (86.96)
6 (13.04)
Reference
Reference
70~99%
38
32 (84.21)
6 (15.79)
1.250 (0.368–4.248)
0.128
0.721
0.859 (0.131–5.647)
0.025
0.874
Plaque#
Unstable
62
53 (85.48)
9 (14.52)
1.274 (0.248–6.538)
0.084
0.772
1.950 (0.17–22.334)
0.288
0.591
Patients were stratified according to age at surgery (<70 vs. ≥70 years). Elderly patients (aged ≥70 years) had a higher risk of mortality (OR = 8.3684, 95% CI = 2.048–34.202, ), and age was an independent risk factor (OR = 20.054, 95% CI = 3.094–129.987, ). OR: odds ratio; 95% CI: 95% confidence interval; ‡: Wald χ2 for univariate logistic regression; §: Wald χ2 for multivariate logistic regression.
