2 - 5

27.4

18.7

78.6

42.9

10.0

0.0

>5

12.0

10.7

50.0

11.1

0.0

0.0

Lymph node involvement

Negative

34.5

31.3

75.0

68.8

18.8

0.0

3.114

0.078

Positive

22.6

16.1

70.9

31.4

5.8

0.0

Number of lymph nodes

≤3

32.9

29.9

82.1

60.7

14.3

0.0

5.046*

0.025*

≥4

21.3

15.3

67.6

28.4

5.4

0.0

HER-2 status

Negative

26.2

18.4

70.1

41.8

8.9

0.0

2.365

0.124

Positive

20.2

14.5

72.7

27.3

3.3

0.0

Hormone receptors status

ER/PR negative

17.4

12.8

65.0

20.0

5.0

0.0

3.833*

0.049*

ER/PR positive

26.3

18.7

72.8

42.0

8.6

0.0

Lymph vascular invasion

Negative

15.6

11.7

46.2

23.1

7.6

0.0

0.133

0.715

Positive

19.6

15.8

69.4

25.8

0.0

0.0