Table 2.

Univariate Cox regression analysis for survival according to baseline cfDNA.

	Baseline cfDNA (ng·mL−1)	N (events)	HR	95% CI	P value
OS	< 100	36 (29)	1		0.0355
	≥ 100	7 (7)	2.48	1.06–5.77
	< 26	24 (18)	1		0.0407
	≥ 26	19 (18)	2.02	1.03–3.95
	< 65	33 (26)	1		0.0458
	≥ 65	10 (10)	2.12	1.01–4.45
	< 26	24 (18)	1		0.0534
	26–100	12 (11)	1.67	0.78–3.62	0.19
	≥ 100	7 (7)	2.93	1.20–7.17	0.0188
	Log	43(36)	1.26	1.01–1.56	0.0371
PFS	< 26	24 (22)	1		0.1947
	≥ 26	19 (19)	1.51	0.81–2.83
	< 65	33 (31)	1		0.4507
	≥ 65	10 (10)	1.32	0.64–2.71
	< 100	36 (4)	1		0.3683
	≥ 100	7 (7)	1.47	0.64–3.40
	< 26	24 (22)	1		0.4115
	26–100	12 (12)	1.45	0.71–2.94	0.311
	≥ 100	7 (7)	1.66	0.69–4.00	0.2589
	log	43 (41)	1.2	0.97–1.49	0.0946