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Table 1 Demographic and clinical characteristics of patients with and without recurrence or metastasis

From: CD44+/CD24- phenotype contributes to malignant relapse following surgical resection and chemotherapy in patients with invasive ductal carcinoma

  Without recurrence/metastasis With recurrence/metastasis P
N 56 91  
Age (years) 50.8 ± 12.8 (13.0-77.0) 52.2 ± 12.4 (15.0-81.0) 0.510
Tumor size (cm) 3.2 ± 1.9 (1.2-9.5) 3.0 ± 1.6 (0.4-8.2) 0.437
Lymph node involvement 45 (80.4%) 70 (76.9%) 0.624
TNM stages
I 5 (8.9%) 9 (9.9%) 0.511
II 24 (42.9%) 32 (35.2%)  
III 27 (48.2%) 49 (53.8%)  
IV 0 (0.0%) 1 (1.1%)  
ER expression 26 (46.4%) 31 (34.1%) 0.168
PR expression 28 (50.0%) 36 (39.6%) 0.266
Her2 expression 29 (51.8%) 41 (45.1%) 0.471
Basal-like feature* 9 (16.1%) 30 (33.0%) 0.018
Recurrence   40 (44.0%)  
Metastasis
Skin   2 (2.2%)  
Lung   20 (22.0%)  
Liver   8 (8.8%)  
Bones   11 (12.1%)  
Brain   5 (5.5%)  
Others   5 (5.5%)  
  1. ER, estrogen receptor; PR, progesterone receptor; Her2, human epidermal growth factor receptor 2; IDC, Invasive ductal carcinoma.
  2. * Immunohistochemically negative for both SR and Her2.