Table 4.

Intergroup Comparison of PFS Based on Combination of NLR and ETS.

Group comparison		χ2	P
Group 1	2	9.018	0.003
	3	8.479	0.004
	4	34.291	<0.001
Group 2	3	0.356	0.551
	4	4.582	0.032
Group 3	4	7.266	0.007

Note: Group 1, NLR low/ETS high; group 2, NLR low/ETS low; group 3, NLR high/ETS high; group 4, NLR high/ETS low.

Abbreviations: NLR, neutrophil-to-lymphocyte ratio; ETS, early tumor shrinkage.