TABLE 2.

Independent prognostic factors for DFS in TCGA dataset.

Characteristics	Total (N)	Univariate analysis		Multivariate analysis
		Hazard ratio (95% CI)	p value	Hazard ratio (95% CI)	p value
Risk score	69	35.806 (6.384–200.838)	<0.001 a	28.492 (3.902–208.069)	<0.001 a
Age (years)	69
<65	31	Reference
≥65	38	1.025 (0.447–2.349)	0.954
Sex	69
Male	37	Reference
Female	32	2.372 (1.001–5.623)	0.050	2.055 (0.834–5.062)	0.118
N	66
N0	23	Reference
N+	43	3.881 (1.301–11.576)	0.015 a	1.160 (0.360–3.744)	0.803
T	68
T1+T2	17	Reference
T3+T4	51	2.379 (0.789–7.174)	0.124
Stage	68
Stage I	12	Reference
Stage IIA	12	1.440 (0.197–10.498)	0.719
Stage IIB	43	4.474 (1.010–19.821)	0.049 a
Stage III+IV	1	0.000 (0.000-Inf)	0.998
Grade	68
G1+G2	51	Reference
G3+G4	17	1.446 (0.593–3.521)	0.417
Alcohol drinking history	64
No	25	Reference
Yes	39	1.116 (0.461–2.701)	0.808
Site	69
Body + tail + others	20	Reference
Head	49	3.799 (1.259–11.463)	0.018 a	2.381 (0.799–7.095)	0.119
Tumor diameter	61	0.896 (0.643–1.249)	0.517
Chemotherapy	69
No	19	Reference
Yes	50	2.111 (0.625–7.131)	0.229

^ap-value is less than 0.05.