A Novel Systematic Oxidative Stress Score Predicts the Prognosis of Patients with Operable Breast Cancer

Table 3

Relationship between SOS and clinical characteristics in the training set.

Variables	Total (n )		SOS high ()		SOS low ()		value
	No.	%	No.	%	No.	%
Age							0.002
≤60	1003	84.5	436	80.9	567	87.5
>60	184	15.5	103	19.1	81	12.5
Multifocality							0.115
Yes	29	2.4	9	1.7	20	3.1
No	1158	97.6	530	98.3	628	96.9
Histological grade							0.611
I	89	7.5	36	6.7	53	8.2
II	671	56.5	306	56.8	365	56.3
III	427	36.0	197	36.5	230	35.5
VCE							0.790
Yes	410	34.5	184	34.1	226	34.9
No	777	65.5	355	65.9	422	65.1
T stage							0.038
T1	549	46.2	225	41.7	324	50.0
T2	555	46.8	275	51.0	280	43.2
T3	47	4.0	23	4.3	24	3.7
T4	36	3.0	16	3.0	20	3.1
N stage							0.059
N0	630	53.1	264	49.1	366	56.5
N1	298	25.1	142	26.3	156	24.0
N2	145	12.2	74	13.7	71	11.0
N3	114	9.6	59	10.9	55	8.5
IHC subtype							0.466
Luminal A	252	21.1	104	19.3	148	22.8
Luminal B	645	54.3	296	54.9	349	53.9
HER2+	139	11.7	67	12.4	72	11.1
TNBC	151	11.9	72	13.4	79	12.2