Table 4.

Maximum RR in each category

RR	Total	Category A	Category B	Category C	Category D
GC: CR + PR/total, GC-RR%	15/92, 16%	13/13, 100%	2/20, 10%	0/36, 0%	0/23, 0%
GCS: CR + PR/total, GCS-RR%	39/91, 43%	34/40, 85%	2/21, 10%	3/19, 16%	0/11, 0%
p value	<0.0001	0.1381	0.9590	0.0142	N/A

Best response was evaluated according to RECIST version 1.1 [17].

N/A, not available.

GC, conventional gemcitabine + cisplatin; GCS, biweekly gemcitabine + cisplatin + S-1.

Bold typeface indicates p < 0.1.