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Table 1 Background and tumor characteristics in relation to breast cancer mortality

From: Menopausal hormone therapy in relation to breast cancer characteristics and prognosis: a cohort study

 

Breast cancer deaths

Persons

Mortality ratea

Total

414

2,660

1.9

Age at diagnosis

   

   50 to 54 years

61

345

2.1

   55 to 59 years

84

578

1.7

   60 to 64 years

89

570

1.9

   65 to 69 years

96

661

1.8

   70 to 74 years

84

506

2.1

Socioeconomic statusb

   

   Low

209

1,335

1.9

   High

201

1,308

1.9

   Missing

4

17

3.0

Recent mammography

   

   Yes

205

1,502

1.6

   No

149

895

2.0

   Missing

60

263

3.0

Tumor size

   

   ≤ 10 mm

33

728

0.5

   11 to 20 mm

138

1,153

1.4

   21 to 50 mm

196

689

3.8

   >50 mm

38

70

9.8

   Missing

9

20

7.6

Lymph node involvement

   

   0 lymph nodes

128

1,750

0.8

   1 to 3 lymph nodes

114

546

2.6

   >3 lymph nodes

147

269

9.4

   Missing

25

95

4.0

Grade

   

   1

9

272

0.4

   2

73

742

1.1

   3

199

764

3.4

   Missing

128

882

1.8

Histology

   

   Ductal

301

1,901

1.9

   Lobular

43

309

1.7

   Other

60

415

1.7

   Missing

10

35

4.3

Estrogen receptor (ER), progesterone receptor (PR) status

   

   ER-PR-

100

336

4.2

   ER+PR-

59

286

2.6

   ER-PR+

21

72

3.9

   ER+PR+

148

1172

1.5

   Missing

86

794

1.3

  1. aBreast cancer deaths per 100 person-years. bLow level includes blue-collar workers and low-level white-collar workers, whereas high level includes all other categories.