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Table 1 Characteristics of patients and treatment and univariate analysis of breast cancer specific survival

From: Surgical treatment of breast cancer in patients aged 80 years or older – how much is enough?

Characteristic

Subgroup

Not dead due to breast cancer

Dead due to breast cancer

Univariate analysis

(N = 106)

(N = 48)

American Society of Anaesthesiology score

1 or 2

71

29

0.43

3 or 4

35

19

Eastern Cooperative Oncology Group performance status

1 or 2

94

40

0.36

3 or 4

12

8

Preoperative hormonal treatment

Yes

11

9

0.15

No

95

39

pT-stage

pT1 or pT2

86

29

0.006

pT3 or pT4

20

19

pN-stage

pN0 or unknown

69

14

0.001

pN1 or pN2 or pN3

37

34

Breast cancer surgical procedure

Quadrantectomy

32

10

0.23

Mastectomy

74

38

Axillary lymphadenectomy

Yes

51

36

0.002

No

55

12

Lymph node surgery

Without

31

7

0.003

Sentinel node biopsy

24

4

Lymphadenectomy

51

37

Tumor differentiation

1 or 2

71

19

0.003

3

35

29

Oestrogen receptors

Negative

9

11

0.014

Positive

97

37

Progesterone receptors

Negative

29

35

0.97

Positive

77

13

Molecular subtype

Hormone positive

96

38

0.047

Triple negative

5

8

HER-2 positive

5

2

Surgery in accordance with guidelines

Yes

47

8

0.001

No

59

40

Adjuvant systemic therapy

Tamoxifen

44

9

-

Aromatase inhibitor

49

33

Cytostatics

0

1

Trastuzumab

0

0

Without

13

5

Radiotherapy

Yes

10

7

0.34

No

96

41