Table 3 Univariable and multivariable Cox regression analysis of risk factors for stent occlusion. (Location: After the sub-heading “Statistical analysis of risk factors for stent occlusion” in the Results)
Variable | Univariable analysis | Multivariable analysis | ||
|---|---|---|---|---|
Hazard ratio* | p value | Hazard ratio* | p value | |
Sex | ||||
female | 1 [reference] | |||
male | 0.69 (0.12, 3.88) | 0.67 | ||
Age | ||||
< 65 years old | 1 [reference] | |||
≥ 65 years old | 0.61 (0.12, 3.06) | 0.55 | ||
Underlying disease | ||||
other malignancy | 1 [reference] | |||
pancreas cancer | 0.60 (0.12, 3.03) | 0.54 | ||
PV resection | 0.24 (0.03, 2.04) | 0.19 | ||
Neoadjuvant radiotherapy | 0.73 (0.13, 4.02) | 0.72 | ||
Etiology of PV stenosis | ||||
benign | 1 [reference] | |||
malignant | 0.43 (0.05, 3.87) | 0.45 | ||
Degree of stenosis | ||||
stenosis | 1 [reference] | |||
occlusion | 2.15 (0.39, 11.95) | 0.38 | ||
Lesion length | ||||
≤ 4 cm | 1 [reference] | |||
> 4 cm | 10.16 (1.14, 88.63) | 0.04 | 5.30 (0.53, 53.18) | 0.15 |
Interval between surgery and stent placement | ||||
≤ 100 days | 1 [reference] | |||
> 100 days | 3.29 (0.57, 19.15) | 0.18 | ||
Approach | ||||
transhepatic | 1 [reference] | |||
trans-ileocecal vein | 0.82 (0.16, 4.14) | 0.81 | ||
Hepatopetal collateral vein visualization before stent placement | 2.06 (0.38, 11.26) | 0.41 | ||
Hepatofugal collateral vein visualization before stent placement | 3.00 (0.55, 16.48) | 0.21 | ||
Hepatopetal collateral vein visualization after stent placement | 1.14 (0.00, 63,019.87) | 0.98 | ||
Hepatofugal collateral vein visualization after stent placement | 7.76 (1.27, 47.24) | 0.03 | 8.58 (0.66, 112.18) | 0.10 |
Post-procedural anticoaglants | 8.1 × 106 (0.00, infinite) | 1.00 | ||
Residual stenosis ≥ 30% after stent placement | 5.13 (0.99, 26.54) | 0.05 | 10.80 (1.08, 108.44) | 0.04 |