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Table 1 Patients characteristics and tumour parameters

From: Nottingham Prognostic Index in Triple-Negative Breast Cancer: a reliable prognostic tool?

Variable (N= 467) Data
Age at Diagnosis, years  
   Mean and standard deviation 59 ± 13
   Range 64 (Min 28; Max 92)
Tumour Size (cm)  
   Mean and standard deviation 3.110 cm ± 2.00 cm
   Range 15.6 (Min 0.4; max 16)
   T1: < 2 cm 101 (24.7%)
   T2: 2-5 cm 245 (59.9%)
   T3: > 5 cm 63 (15.4%)
   Not assessed 58
Lymph Node Invasion  
   Present 207 (56.6%)
   Absent 159 (43.4%)
   Not assessed 101
Histological Grade  
   Grade I 81 (18.3%)
   Grade II 135 (30.5%)
   Grade III 227 (51.2%)
   Not assessed 24
Oestrogen receptor  
   Positive 309 (66.5%)
   Negative 156 (33.5%)
   Not assessed 2
Progesterone Receptor  
   Positive 228 (48.9%)
   Negative 238 (51.1%)
   Not assessed 1
HER2  
   Positive 68 (14.7%)
   Negative 395 (85.3%)
   Not assessed 4
Nottingham Prognostic Index  
   NPI < 3.4 99 (24.4%)
   3.4 ≤ NPI ≤ 5.4 188 (46.4%)
   NPI > 5.4 118 (29.2%)
   Not assessed 62
Molecular Subtype  
   Luminal 343 (73.6%)
   HER2 Over-expressing 33 (7.1%)
   Triple Negative 90 (19.3%)