Table 4.

Phase of trial and level of evidence of trial about chemotherapy for resectable and borderline resectable pancreatic ductal adenocarcinoma

Ref.	Phase of trial	Level of evidence
Neoptolemos et al[185]	III	II
Oettle et al[186]	III	I
Neoptolemos et al[187]	III	I
Neoptolemos et al[188]	III	I
Conroy et al[189]	III	I
You et al[195]	III	II
van Roessel et al[198]	IV	II
Versteijne et al[202]	III	II
Ghaneh et al[205]	II	II
Sohal et al[207]	IV	II
Labori et al[209]	III	II
Schwarz et al[210]	II	I
Ettrich et al[211]	II	II
Motoi et al[212]	III	II
UMIN-CTR Clinical Trial[215] (UMIN000026858)	III	II