Table 4.

Univariable and multivariable Cox proportional hazard ratio of the prognostic score for overall survival.

Variable		No.	Event	Censored	Univariable analysis		Multivariable analysis
					HR (95% CI)	P-Value	HR (95% CI)	P-Value
Group	Poor-prognosis	104	63	41	1.49 (1.07–2.08)	0.019	1.75 (1.07–2.99)	0.031
	Intermediate-prognosis	107	58	49	0.94 (0.67–1.31)	0.710	1.55 (0.95–2.61)	0.088
	Good-prognosis	48	21	27	1		1
Age (10-year intervals)		–	–	–	0.91 (0.79–1.06)	0.227	0.98 (0.84–1.15)	0.777
ECOG PS	2	28	21	7	2.75 (1.68–4.29)	<0.001	2.36 (1.40–3.80)	<0.001
	0–1	231	121	110	1		1
Treatment line	Later-line	195	116	79	1.66 (1.10–2.60)	0.020	1.60 (1.06–2.51)	0.032
	First-line	64	26	38	1		1

ECOG PS, Eastern Cooperative Oncology Group performance status; HR, hazard ratio; CI, confidence interval.