Table 4.
Univariate and multivariate analyses of risk factors for TIVAD failure
| Univariate hazard ratio | 95% CI | P value | Multivariate hazard ratio | 95% CI | P value | |
| Age (yr) | 1.009 | 1.002-1.015 | 0.006 | 1.009 | 1.003-1.016 | 0.003 |
| Sex | ||||||
| Male | 1.63 | 1.373-1.936 | < 0.001 | 1.566 | 1.318-1.861 | < 0.001 |
| Female | 1 | |||||
| Origin of patients | ||||||
| Inpatient | 1 | |||||
| Outpatient | 0.926 | 0.779-1.100 | 0.385 | |||
| Type of catheter | ||||||
| Groshong | 1 | |||||
| Open-ended | 1.719 | 1.461-2.023 | < 0.001 | 1.689 | 1.435-1.989 | < 0.001 |
| Insertion site | ||||||
| RCV | 0.891 | 0.754-1.053 | 0.179 | |||
| Others1 | 1 | |||||
| Type of malignancy | ||||||
| Solid | 1 | |||||
| Hematogenous | 1.336 | 0.966-1.849 | 0.080 | 1.499 | 1.079-2.083 | 0.016 |
1
Others include left cephalic vein, right subclavian vein, left subclavian vein, femoral vein and jugular vein. RCV: Right cephalic vein.