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Table 1 Patient and tumor characteristics

From: Long non-coding RNA expression profiles predict metastasis in lymph node-negative breast cancer independently of traditional prognostic markers

  Metastasizing tumors Non-metastasizing tumors
Age at diagnosis (range 33 to 88 years)   
 ≤50 years 16 12
 >50 years 66 70
Tumor size   
 ≤2 cm 35 36
 2 to 5 cm 47 45
 Not available*   1
Estrogen receptor status   
 Positive 58 62
 Negative 24 20
Tumor type   
 Invasive ductal carcinoma 64 67
 Invasive lobular carcinoma 9 9
 Mucinous carcinoma 2 2
 Papillary carcinoma 3 2
 Carcinoma with metaplasia 2 2
 Not available* 2  
Histologic grade   
 1 (good) 12 15
 2 (intermediate) 29 25
 3 (poor) 23 26
 Not available* 18 16
Median year of surgery (range 1980 to 2003) 1993 1994
Mean time to metastasis (months) 48.4 -
Mean follow up (months) - 217
Vital status (number of patients alive April 2013) 5 57
  1. Results are presented as number of patients unless stated otherwise. *Not available in the Danish Breast Cancer Cooperative Group (DBCG) database.