Table 2.

Variables included in each score with the total number of appearances in the right column. White background denotes pre-operative variables, light grey intra-operative variables and dark grey post-operative variables

	Wellner et al. (2010) 17	Callery et al. (2013) 22	Roberts et al. (2014) 20	Gaujoux et al. (2009) 25	Yamamoto et al. (2011) 18	Graham et al. (2013) 26	Total
Age	•					•	2
Gender					•		1
Smoking history	•						1
BMI			•	•		•	3
Weight loss	•						1
IA fat thickness					•		1
Pancreatitis history	•						1
Relation of PV to tumour					•		1
Diagnosis	•	•			•		3
PD width (radiological)		•	•		•		3
Blood loss		•					1
Pancreatic texture		•					1
PD width (intra-operative)						•	1
Pancreatic fat				•			1
Pancreatic fibrosis				•			1
Drain amylase (POD2)						•	1

BMI, body mass index; IA, intra-abdominal; PV, portal vein; PD, pancreaticoduodenectomy; POD, post-operative day.