Table 5 Risk Factors Affecting Primary and Overall Success Rates
From: Long-term outcomes of two types of metal stent for chronic benign ureteral strictures
Primary | Overall | |||
|---|---|---|---|---|
HR | p-value | HR | p-value | |
Stent type | ||||
Mesh | 1.000 | ─ | 1.000 | ─ |
Thermo-expandable | 0.393 | 0.052 | 0.680 | 0.468 |
Age (yr) | 0.983 | 0.298 | 0.966 | 0.095 |
Gender | ||||
Male | 1.000 | ─ | 1.000 | ─ |
Female | 0.469 | 0.131 | 0.640 | 0.462 |
Stricture location | ||||
Pelvic ureter | 1.000 | ─ | 1.000 | ─ |
Non-pelvic uretera | 2.631 | 0.062 | 4.203 | 0.030* |
Stricture length (cm) | ||||
≤10 cm | 1.000 | ─ | 1.000 | ─ |
> 10 cm | 2.925 | 0.077 | 1.789 | 0.430 |
Stent length | 0.138 | 0.058 | ||
< 10 cm | 1.000 | ─ | 1.000 | ─ |
10–15 cm | 0.425 | 0.144 | 0.388 | 0.140 |
> 15 cm or multipleb | 0.185 | 0.047* | 0.111 | 0.018* |
Prior radiation therapy | ||||
No | 1.000 | ─ | 1.000 | ─ |
Yes | 2.155 | 0.198 | 5.412 | 0.048* |
Previous PCN | ||||
No | 1.000 | ─ | 1.000 | ─ |
Yes | 4.014 | 0.003* | 3.064 | 0.035* |
Balloon dilatation | ||||
No | 1.000 | ─ | 1.000 | ─ |
Yes | 0.980 | 0.963 | 0.978 | 0.970 |