Table 2. Univariate and multivariate Cox regression analyses in the training and validation set.

Variables	Univariate model			Multivariate model
	HR	95% CI of H	P-Valuea	HR	95% CI of HR	P-Valuea
Training set (N  =  532)
Three-lncRNA risk score	2.72	1.95–3.79	3.31E-09	2.74	1.98–3.81	1.50E-09
Age	1.03	1.10-1.05	4.83E-03	1.03	1.01–1.05	3.50E-04
Validation set (N  =  532)
Three-lncRNA risk score	2.20	1.59–3.04	2.04E-06	1.99	1.44–2.74	3.14E-05
Age	1.03	1.01–1.05	1.10E-02	1.03	1.01–0.05	1.13E-03
Training set (N  =  521)
Three-lncRNA risk score	3.11	2.08–4.44	3.46E-10	3.1	2.17–4.43	5.91E-10
Stage	1.87	1.34–2.60	2.00E-04	1.97	1.36–2.86	3.00E-04
Validation set (N  =  525)
Three-lncRNA risk score	2.45	1.76–3.41	2.04E-07	2.74	1.77–3.55	2.00E-07
Stage	1.71	1.21–2.42	2.00E-04	1.79	1.24–2.58	2.00E-04
Training set (N  =  517)
Three-lncRNA risk score	2.77	1.95–3.94	1.20E-08	2.62	1.83–3.75	1.37E-07
Subtype	0.72	0.54–0.96	2.30E-02	0.84	0.63–1.13	2.40E-02
Validation set (N  =  504)
Three-lncRNA risk score	2.18	1.47–3.22	1.06E-04	2.33	1.55–3.49	4.10E-05
Subtype	0.98	0.72–1.34	9.12E-01	1.20	0.87–1.65	2.69E-01