Table 2.

Multivariate Cox proportional hazard model for OS.

	Hazard Ratio (95%CI)	p-Value
First-line intensive	1.00	0.07
First-line non-intensive	1.76 (0.96–3.23)
ECOG 0–1	1.00	0.83
ECOG ≥ 2	1.07 (0.57–2.03)