Table 2.
Univariate and multivariate analyses of prognostic factors for survival
| Univariate analysis | Multivariate analysis | |||||
| Variable | HR | p Value | 95% CI | HR | p Value | 95% CI |
| Age, year | ||||||
| <65 | 1 | |||||
| ≥65 | 1.409 | 0.208 | 0.826 to 2.403 | |||
| Sex | ||||||
| Male | 1 | |||||
| Female | 1.155 | 0.596 | 0.678 to 1.969 | |||
| BMI, kg/m2 | ||||||
| <20 | 1 | |||||
| ≥20 | 0.950 | 0.861 | 0.532 to 1.694 | |||
| Total bilirubin level, μmol/L | ||||||
| <200 | 1 | |||||
| ≥200 | 1.605 | 0.082 | 0.942 to 2.737 | |||
| Duration of symptoms, days | ||||||
| <30 | 1 | |||||
| ≥30 | 1.315 | 0.328 | 0.760 to 2.275 | |||
| Bismuth type | ||||||
| Type III | 1 | |||||
| Type IV | 1.756 | 0.047 | 1.008 to 3.059 | |||
| Distant metastasis | ||||||
| Absent | 1 | 1 | ||||
| Present | 0.340 | 0.001 | 0.181 to 0.637 | 0.304 | <0.001 | 0.159 to 0.584 |
| Stent type | ||||||
| REMS | 1 | 1 | ||||
| SEMS | 4.295 | <0.001 | 2.204 to 8.371 | 6.456 | <0.001 | 2.355 to 9.225 |
| Poststenting chemotherapy | ||||||
| Yes | 1 | |||||
| No | 2.007 | 0.090 | 0.896 to 4.492 | |||
BMI, body mass index; REMS, radiation-emitting metallic stent; SEMS, self-expandable metallic stent.