Table 3. Correlations between the risk scores of mutator-derived lncRNAs and the clinicopathological characteristics in the training set, test set, and total set.

Parameters	Training set (n=224)					Testing set (n=222)					Total set (n=446)
	HR	LR	χ2	P		HR	LR	χ2	P		HR	LR	χ2	P
Age (y)
≤65	42	48	0.4643	0.4956		52	41	0.1127	0.7371		94	89	0.0178	0.8938
>65	70	64				68	61				138	125
Gender
Male	57	59				66	52				123	111
Female	55	53	0.0179	0.8936		54	50	0.2145	0.6432		109	103	0.0218	0.8826
Stage
Stage I–II	52	72	7.4875	0.0062		64	62	0.9353	0.3335		116	134	7.3455	0.0067
Stage III–IV	59	37				52	37				111	74
Unknown	4	1									5	6
T
T1–2	18	21	0.1035	0.7476		19	28	3.79	0.0516		37	49	2.9457	0.0861
T3–4	93	91				101	74				194	165
Unknown	1	0									1	0
M
M0	79	89	1.5986	0.2061		86	75	0.6441	0.4222		165	164	2.5732	0.1087
M1	19	12				19	11				38	23
Unknown	14	11				15	16				29	27
N
N0	53	78	10.5905	0.0011		68	66	1.1722	0.2789		121	144	9.956	0.0016
N1–2	59	34				52	36				111	70

LncRNAs, long non-coding RNAs; HR, high risk; LR, low risk.