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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.