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Table 2 Characteristics of included breast cancer patients

From: Trends of population-based breast cancer survival in Germany and the US: Decreasing discrepancies, but persistent survival gap of elderly patients in Germany

Category

1989-1992

1993-1996

1997-2000

2001-2004

2005-2008

  

n

%

n

%

n

%

n

%

n

%

  

Germany (Saarland)

overall

 

2,564

 

2,877

 

3,118

 

3,354

 

3,494

 

age

15-49 years

514

20.0

537

18.7

637

20.4

594

17.7

640

18.3

 

50-69 years

1,179

46.0

1,322

46.0

1,418

45.5

1,591

47.4

1,653

47.3

 

> = 70 years

871

34.0

1,018

35.4

1,063

34.1

1,169

34.9

1,201

34.4

stage

available

1,811

70.6

2,353

81.8

2,665

85.5

2,898

86.4

2,839

81.3

 

localized a

694

38.3

1,043

44.3

1,260

47.3

1,448

50.0

1,411

49.7

 

local/regional spread a

912

50.4

1,082

46.0

1,143

42.9

1,179

40.7

1,186

41.8

 

distant metastasis a

205

11.3

228

9.7

262

9.8

271

9.4

242

8.5

tumour size

available

2,013

78.5

2,513

87.3

2,872

92.1

3,120

93.0

3,127

89.5

 

T1 a

661

32.8

921

36.6

1,126

39.2

1,384

44.4

1,402

44.8

 

T2 a

953

47.3

1,116

44.4

1,249

43.5

1,249

40.0

1,293

41.3

 

T3/4 a

399

19.8

476

18.9

497

17.3

487

15.6

432

13.8

microscopic confirmation

2,418

94.3

2,761

96.0

3,018

96.8

3,251

96.9

3,397

97.2

death certificate only notified

82

3.2

62

2.2

52

1.7

59

1.8

79

2.3

no follow-up available

64

2.5

43

1.5

79

2.5

67

2.0

49

1.4

  

US (SEER 9/13 regions b)

overall

 

64,556

 

87,228

 

97,713

 

97,579

 

98,857

 

age

15-49 years

15,314

23.7

21,103

24.2

23,124

23.7

23,592

24.2

23,731

24.0

 

50-69 years

27,007

41.8

36,641

42.0

42,501

43.5

44,147

45.2

46,914

47.5

 

> = 70 years

22,235

34.4

29,484

33.8

32,088

32.8

29,840

30.6

28,212

28.5

stage

available

62,016

96.1

84,078

96.4

94,920

97.1

95,510

97.9

97,094

98.2

 

localized a

39,075

63.0

54,468

64.8

61,062

64.3

59,715

62.5

61,235

63.1

 

local/regional spread a

19,186

30.9

24,684

29.4

28,472

30.0

30,169

31.6

29,843

30.7

 

distant metastasis a

3,755

6.1

4,926

5.9

5,386

5.7

5,626

5.9

6,016

6.2

tumour size

available

53,027

82.1

73,352

84.1

85,692

87.7

87,682

89.9

93,254

94.3

 

T1 a

33,518

63.2

47,364

64.6

55,847

65.2

56,038

63.9

56,522

60.6

 

T2 a

14,848

28.0

20,080

27.4

22,746

26.5

24,007

27.4

27,088

29.0

 

T3/4 a

4,661

8.8

5,908

8.1

7,099

8.3

7,637

8.7

9,644

10.3

microscopic confirmation

63,443

98.3

85,855

98.4

96,357

98.6

96,364

98.8

97,831

99.0

death certificate only notified

394

0.6

497

0.6

602

0.6

554

0.6

479

0.5

  1. Characteristics of female breast cancer patients (ICD-10 code: C50) from Germany (Saarland) and the US (SEER 9/13 regions) diagnosed between 1989 and 2008.
  2. a proportion among patients with available stage/T classification; b the coverage of SEER program was extended from 9 to 13 registries in 1992.
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