Table 5. Cox regression analysis of factors associated with primary patency.
| Variable | Univariate analysis | Multivariate analysis | ||||||
|---|---|---|---|---|---|---|---|---|
| B | HR | 95%CI | p-value | B | HR | 95%CI | p-value | |
| Chronic kidney failure | 1.041 | 4.00 | 0.419-6306 | 0.307 | 11.156 | 6.98 | 0.316-38.511 | 0.979 |
| Tobacco use | 2.214 | 1.45 | 0.109-2.297 | 0.966 | −13.410 | 3.48 | 0.316-38.511 | 0.308 |
| TASC type C/D | 18.521 | 10.42 | 0.388-5.188 | 0.000 | 2.866 | 17.56 | 1.075-286.992 | 0.044 |
| Iliac segment treated † | 1.756 | 1.36 | 0.221-1.501 | 0.185 | 2.840 | 17.11 | 0.372-786.351 | 0.146 |
| Diabetes mellitus | 0.016 | 0.81 | 0.016-4.684 | 0.900 | −1.310 | 0.27 | 0.016-4.864 | 0.368 |
B = coefficient; HR = hazard ratio; CI = confidence interval.
†
Iliac segment treated: common iliac artery + external iliac artery vs. common iliac artery.