Table 3.
Univariable and multivariable Cox regression analyses of overall survival in ampullary carcinoma patients
| Characteristic |
Univariable analysis
|
Multivariable analysis
|
||
|
HR (95%CI)
|
P value
|
HR (95%CI)
|
P value
|
|
| Perioperative blood transfusion | ||||
| No | Reference | Reference | ||
| Yes | 0.937 (0.626-1.339) | 0.723 | 0.975 (0.676-1.405) | 0.891 |
| RBC units | ||||
| 0 | Reference | |||
| 1-4 units | 0.924 (0.643-1.329) | 0.671 | ||
| ≥ 5 units | 1.139 (0.455-2.851) | 0.781 | ||
| Sex | ||||
| Male | Reference | |||
| Female | 0.868 (0.606-1.244) | 0.441 | ||
| Age (yr) | ||||
| ≤ 60 | Reference | Reference | ||
| > 60 | 0.535 (0.371-0.774) | 0.001 | 1.541 (0.698-3.400) | 0.284 |
| Operation time | ||||
| ≤ 6 h | Reference | |||
| > 6 h | 1.260 (0.840-1.892) | 0.264 | ||
| Tumor size (cm) | ||||
| ≤ 2.0 cm | Reference | Reference | ||
| > 2.0 cm | 1.337 (0.939-1.903) | 0.107 | 1.105 (0.756-1.614) | 0.608 |
| Differentiation | ||||
| Well | Reference | Reference | ||
| Moderate | 0.895 (0.603-1.330) | 0.584 | 0.969 (0.637-1.474) | 0.883 |
| Poor | 0.593 (0.360-0.977) | 0.040 | 0.967 (0.529-1.766) | 0.913 |
| T stage | ||||
| T1 | Reference | Reference | ||
| T2 | 1.407 (0.770-2.569) | 0.267 | 1.282 (0.660-2.491) | 0.463 |
| T3 | 2.796 (1.564-4.997) | 0.001 | 3.024 (1.245-7.341) | 0.014 |
| N stage | ||||
| N0 | Reference | Reference | ||
| N1 | 1.986 (1.336-2.953) | 0.001 | 2.072 (1.240-3.465) | 0.021 |
| N2 | 2.119 (0.977-4.595) | 0.057 | 1.988 (0.820-4.817) | 0.128 |
| Blood vessel invasion | ||||
| No | Reference | Reference | ||
| Yes | 1.616 (0.054-2.478) | 0.028 | 1.087 (0.669-1.766) | 0.737 |
| Postoperative complications | ||||
| No | Reference | Reference | ||
| Yes | 1.358 (0.950-1.943) | 0.093 | 1.345 (0.930-1.946) | 0.116 |
| Adjuvant treatment | ||||
| No | Reference | |||
| Yes | 1.056 (0.702-1.588) | 0.794 | ||