Table 7.

Multivariate Analysis of PFS in 42 Patients (Apatinib Group).

Prognostic Factor	Disease-Free Survival (PFS)
	Odds Ratio	95% CI	P Value
Age	1.349	0.524-3.473	.534
Gender	2.187	0.740-6.459	.157
CD4+CD25+ T cells change	0.342	0.124-0.947	.039
NK cells change	0.814	0.285-2.329	.701
T cells change	0.963	0.374-2.480	.937
The therapy regime	1.277	0.440-3.709	.653
Diagnosis	2.597	0.869-7.758	.087
Metastatic organ number	2.127	0.509-8.882	.301
The line of therapy	1.008	0.347-2.930	.998

Abbreviations: CI, confidence interval; NK, natural killer; PFS, progression-free survival.