Patient characteristics
| Biliary tract cancer | Pancreatic cancer | Comparator group | |
|---|---|---|---|
| n=848 (%) | n=2773 (%) | n=15 395 (%) | |
| Males (%) | 390 (46) | 1328 (48) | 7233 (47) |
| Mean age (±SD) | 71 (12) | 72 (12) | 71 (11) |
| Mean BMI (±SD) | 27 (5) | 27 (5) | 27 (5) |
| Smoking status (%) | |||
| Never | 446 (53) | 1345 (49) | 8610 (56) |
| Ex | 181 (21) | 586 (21) | 3635 (24) |
| Current | 203 (24) | 760 (27) | 3090 (20) |
| Missing | 18 (2) | 82 (3) | 60 (1) |
| Townsend score (%) | |||
| (Most affluent) 1 | 194 (23) | 739 (27) | 4176 (27) |
| 2 | 197 (23) | 685 (25) | 3611 (24) |
| 3 | 168 (20) | 542 (20) | 3176 (21) |
| 4 | 140 (17) | 457 (17) | 2536 (17) |
| (Most deprived) 5 | 128 (15) | 290 (11) | 1542 (10) |
| Missing | 21 (2) | 60 (2) | 354 (2) |
Body mass index (BMI)=weight (kg)/(height(m))2.
BMI<18.5=underweight, BMI 18.5–25=normal, BMI 25–30=overweight, BMI >30=obese.