|  | Stent dysfunction (n = 41) | Univariate | Multivariate | |||||
---|---|---|---|---|---|---|---|---|---|
n | Â | HR | 95% CI | P value | HR | 95% CI | P value | ||
Type of stent | Uncovered | 34 | 18 | 1 | |||||
Partially | 21 | 7 | 0.27 | 0.11–0.69 | 0.006* | 0.33 | 0.12–0.86 | 0.023* | |
Fully | 25 | 16 | 0.87 | 0.44–1.71 | 0.687 | 0.88 | 0.43–1.78 | 0.719 | |
Age | <75 | 40 | 20 | 1 | |||||
≥75 | 40 | 21 | 1.05 | 0.56–1.97 | 0.874 | ||||
Sex | Male | 48 | 22 | 1 | |||||
Female | 32 | 19 | 1.67 | 0.89–3.12 | 0.111 | 1.62 | 0.82–3.19 | 0.163 | |
Performance status | 0–2 | 75 | 39 | 1 | |||||
3,4 | 5 | 2 | 2.22 | 0.52–9.49 | 0.283 | ||||
Location of stricture | Lower | 62 | 31 | 1 | |||||
Middle | 18 | 10 | 0.69 | 0.33–1.45 | 0.327 | ||||
Length of stricture | ≤20 mm | 42 | 18 | 1 | |||||
>20 mm | 38 | 23 | 1.71 | 0.92–3.20 | 0.092 | 1.33 | 0.67–2.64 | 0.418 | |
Stent length | ≤6 cm | 72 | 37 | 1 | |||||
8 cm | 8 | 4 | 2.33 | 0.81–6.69 | 0.117 | 2.26 | 0.70–7.31 | 0.172 | |
Length of a portion of the stent over the stricture | <30Â mm | 36 | 22 | 1 | |||||
≥30 mm | 44 | 19 | 0.92 | 0.49–1.72 | 0.787 | ||||
Prior transpapillary drainage | No | 33 | 13 | 1 | |||||
Yes | 47 | 28 | 0.96 | 0.49–1.88 | 0.906 | ||||
History of cholecystectomy | No | 75 | 40 | 1 | |||||
Yes | 5 | 1 | 0.60 | 0.08–4.36 | 0.610 | ||||
EST | No | 8 | 5 | 1 | |||||
Yes | 72 | 36 | 0.95 | 0.34–2.68 | 0.921 | ||||
Duodenal invasion | absent | 49 | 21 | 1 | |||||
present | 31 | 20 | 1.27 | 0.68–2.36 | 0.460 | ||||
Duodenal stent | absent | 65 | 32 | 1 | |||||
Present | 15 | 9 | 1.12 | 0.52–2.44 | 0.770 | ||||
Chemotherapy | No | 19 | 7 | 1 | |||||
Yes | 61 | 34 | 0.59 | 0.26–1.35 | 0.211 |