Table 2 Five variables were identified related to CLNM by univariate analysis

Gender

5.3568

0.021

Male

35

47

Female

84

211

Multifocality

4.1856

0.041

Negative

85

210

Positive

34

48

Location

Fisher^’s

0.535

Upper

27

60

Middle

58

113

Lower

30

80

Isthmus

4

5

Boundary

4.4489

0.035

Clear

44

127

Unclear

75

131

A/T

0.13113

0.717

 > 1

55

126

 ≤ 1

64

132

Microcalcification

0.90948

0.340

Positive

72

141

Negative

47

117

Blood Supply

0.28995

0.590

Positive

40

78

Negative

79

180

Age

42.09 ± 11.16

44.40 ± 11.22

17392

0.038

Tumor Size

0.70 ± 0.21

0.60 ± 0.22

11551

 < 0.001