Table 1 Clinical characteristics of patients

All patients

123

100

Age (years)

   ≤45

49

40

   >45

74

60

ER status

   Positive

75

61

   Negative

48

39

PR status

   Positive

74

60

   Negative

49

40

HER2 status

   Positive

41

33

   Negative

82

67

T stage

   1

60

49

   2

49

40

   3

10

8

   4

4

3

N stage

   0

63

51

   1

29

24

   2

18

15

   3

13

11

M stage

   0

114

93

   1

9

7

Chemotherapy

   No

19

15

   Yes

104

85

Hormone receptor targeting therapy

   No

34

28

   Yes

89

72

Radiation therapy

   No

50

41

   Yes

73

59

Herceptin

   No

102

83

   Yes

21

17