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Table 1 Baseline and clinical characteristics of patients

From: How accurate is frozen section pathology compared to permanent pathology in detecting involved margins and lymph nodes in breast cancer?

Variable   Statistic
Age—years Mean ± SD 48.96 ± 11.44
  Median (IQR) 48.00 (41, 57)
Tumor size—cm Mean ± SD 2.43 ± 1.13
  Median (IQR) 2.20 (1.70, 3)
Involved breast side—no. (%) Right 1291 (48)
  Left 1396 (52)
Tumor grade—no. (%) 1 413 (16.9)
  2 1442 (59)
  3 591 (24.2)
In-situ component—no. (%) Yes 1570 (58.4)
  No 851 (31.7)
  Unclear 6 (0.2)
Tumor necrosis—no. (%) Yes 1438 (53.5)
  No 944 (35.1)
  Unclear 6 (0.2)
Surface receptors—no. (%) ER positive 1972 (73.4)
  PR positive 1836 (68.3)
  HER2 positive 608 (22.6)
  Triple negative 273 (10.1)
Nucleus grade—no. (%) 1 389 (14.5)
  2 673 (25)
  3 425 (15.8)