Table 3.

The prognostic value of PS in different risk scores.

Risk score	Patients (n)		Univariate analyses		Multivariate analyses		Variables included in multivariate analysis*
	PS 0	PS 1	HR (95%CI)	P value	HR (95%CI)	P value
0	556	110	0.73 (0.44-1.22)	0.235	0.75 (0.45-1.25)	0.274	Age, Tumor number
5	228	45	0.45 (0.26-0.87)	0.016	0.50 (0.27-0.90)	0.022	PLT
8	234	105	0.49 (0.33-0.74)	0.001	0.50 (0.33-0.75)	0.001	Albumin
10	10	2	28.0 (0.01-39.0)	0.490	28.2 (0.00-40.1)	0.988	PLT, BUN, Age
13	156	76	0.69 (0.46-1.05)	0.084	0.70 (0.46-1.06)	0.091	PLT
18	9	4	0.69 (0.15-3.11)	0.633	0.37 (0.06-2.17)	0.275	AST

^* Variables with statistically significant differences in univariate analysis and included in multivariate analysis for adjustment.

HR, hazard ratio; CI, confidence interval; PS, performance status; AST, aspartate aminotransferase; PLT, platelet count; BUN, blood urea nitrogen.