Table 1.
Patient background
| < 80 yr old (Group A) | ≥ 80 yr old (Group B) | P value | |
| Number of patients | 184 | 88 | |
| Male | 105 | 52 | NS |
| Female | 79 | 36 | NS |
| Pancreatic cancer | 136 | 72 | NS |
| Bile duct cancer | 21 | 9 | NS |
| Metastatic biliary obstruction | 13 | 3 | NS |
| Papilla vater cancer | 6 | 3 | NS |
| Gallbladder cancer | 6 | 1 | NS |
| Intraductal papillary mucinous carcinoma | 1 | 0 | NS |
| Hepatocellular carcinoma | 1 | 0 | NS |
| Hepatic metastasis | 40 | 16 | NS |
| Ascites | 45 | 23 | NS |
| Duodenal stent indwelling | 30 | 10 | NS |
| Pathological diagnosis | 161 | 89 | NS |
| Performance status | |||
| 0 | 72 | 8 | 0.0000 |
| 1 | 7 | 3 | NS |
| 2 | 44 | 12 | 0.018 |
| 3 | 29 | 37 | 0.0004 |
| 4 | 32 | 28 | 0.0064 |
| Chemotherapy | 106 | 15 | 0.0000 |
| Hypertension | 55 | 52 | 0.0002 |
| Hyperlipidemia | 20 | 6 | NS |
| Diabetes mellitus | 50 | 31 | NS |
| Chronic respiratory disease | 25 | 18 | NS |
| Cardiac disease | 18 | 20 | 0.0065 |
| Chronic liver disease | 18 | 6 | NS |
| Chronic renal disease | 10 | 3 | NS |
| Cerebrovascular disease | 5 | 20 | 0.0000 |
| Dementia | 5 | 20 | 0.0000 |
| Anticoagulant/antiplatelet | 9 | 23 | 0.0270 |
NS: Not significant.