Impacts of LOC105371267 Variants on Breast Cancer Susceptibility in Northern Chinese Han Females: A Population-Based Case-Control Study

Table 1

Characteristics of breast cancer cases and cancer-free controls.

Variables	Breast cancer patients (n = 561)	Control (n = 555)
Age (years) (mean ± SD)	52.04 ± 9.82	51.84 ± 9.76	0.738
ER status, n (%)
Positive	380 (67.7)
Negative	172 (30.7)
Unavailable	9 (1.6)
PR status, n (%)
Positive	328 (58.5)
Negative	224 (39.9)
Unavailable	9 (1.6)
Ki67 status, n (%)
High	371 (66.1)
Low	154 (27.5)
Unavailable	36 (6.4)
Tumor size (cm), n (%)
>2	238 (42.4)
≤2	206 (36.7)
Unavailable	117 (20.9)
Tumor location, n (%)
Right	267 (47.6)
Left	284 (50.6)
Bilateral	8 (1.4)
Unavailable	2 (0.4)
Lymph nodes metastasis, n (%)
Positive	277 (49.4)
Negative	279 (49.7)
Unavailable	5 (0.9)
Distance metastasis, n (%)
M0	517 (92.2)
M1	39 (7.0)
Unavailable	5 (0.9)
TNM stage, n (%)
I-II	366 (65.2)
III-IV	161 (28.7)
Unavailable	34 (6.1)
Primary or recurrent, n (%)
Primary	424 (75.6)
Recurrent	22 (3.9)
Unavailable	112 (20.5)

ER: estrogen receptor; RP: progesterone receptor; SD: standard deviation. Note: ^a values were calculated by independent samples t-test; empty cells indicate data loss.