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Table 1 Patients’ characteristics and univariate analysis of factors related to survival

From: Survival of patients with operable breast cancer (Stages I-III) at a Brazilian public hospital - a closer look into cause-specific mortality

Factor

Cases

%

Events

%

p value*

HR

95% CI**

Age

    

.012

  

Up to 35 years old

47

5.24

16

34.04

 

1.63

0.98–2.73

36-69 years old

677

75.47

159

23.49

 

1.00

 

70 and older

173

19.29

53

30.64

 

1.50

1.10–2.04

Tumor size

   

< 0.001

  

T1 (up to 2 cm)

319

35.56

33

10.34

 

1.00

 

T2 (2–5 cm)

348

38.80

88

25.29

 

2.59

1.73–3.86

T3

105

11.71

37

35.24

 

4.03

2.52–6.45

T4

125

13.94

70

56.00

 

8.02

5.29–12.16

Lymph node status

   

< 0.001

  

N0

387

43.14

45

11.63

 

1.00

 

N1

255

28.43

67

26.27

 

2.56

1.76–3.74

N2

155

17.28

68

43.87

 

4.83

3.31–7.04

N3

100

11.15

48

48.00

 

5.25

3.50–7.90

Stage

    

< 0.001

  

I

223

24.86

13

5.83

 

1.00

 

II

315

35.12

58

18.41

 

3.34

1.83–6.10

III

359

40.02

157

43.73

 

9.84

5.58–17.33

Bilateral breast cancer

  

0.380

  

Yes

29

3.23

10

34.48

 

1.33

0.70–2.50

No

868

96.77

218

25.12

 

1.00

 

Histologic grade

   

< 0.001

  

Grade 1

181

20.18

23

12.71

 

1.00

 

Grade 2

385

42.92

77

20.00

 

1.71

1.07–2.72

Grade 3

320

35.67

124

38.75

 

3.72

2.38–5.80

Unknown

11

1.23

4

36.36

   

Pathology

0.00

  

.449

  

Invasive ductal carcinoma

760

84.73

199

26.18

 

1.00

 

Invasive lobular carcinoma

79

8.81

15

18.99

 

0.73

0.43–1.23

Other

58

6.47

14

24.14

 

0.86

0.50–1.48

Public health system

  

0.006

  

Yes

823

91.75

216

26.25

 

2.22

1.24–3.98

No

74

8.25

12

16.22

 

1.00

 

Neoadjuvant therapy

  

<0.001

  

Yes

166

18.51

77

46.39

 

2.87

2.18–3.78

No

731

81.49

151

20.66

 

1.00

 

Axillary node dissection

   

<0.001

  

Yes

684

76.25

211

30.85

 

3.82

2.33–6.27

No

213

23.75

17

7.98

 

1.00

 

Type of surgery

   

<0.001

  

Mastectomy

537

59.87

182

33.89

 

2.89

2.09–4.00

Breast-conserving surgery

360

40.13

46

12.78

 

1.00

 
  1. *Log-rank test.
  2. **95% Confidence interval.