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Table 2 Distributions of tumor size and tumor grade in Recurrence Score categories for all 220 cases and 570 controls

From: A population-based study of tumor gene expression and risk of breast cancer death among lymph node-negative patients

Variable (number of patients) Recurrence Score  
  < 18
(n = 379)
18–30
(n = 162)
≥30
(n = 249)
Correlation1
(P value)
Tumor size (cm)        0.25 (<0.0001)
   ≤1 (n = 242) 147 (61%) 51 (21%) 44 (18%)  
   1.1–2 (n = 348) 173 (50%) 65 (19%) 110 (32%)  
   2.1–4 (n = 186) 55 (30%) 44 (24%) 87 (47%)  
   >4 (n = 14) 4 (29%) 2 (14%) 8 (57%)  
Tumor grade pathologist 1        0.54 (<0.0001)
   Well (n = 200) 146 (73%) 44 (22%) 10 (5%)  
   Moderate (n = 353) 199 (56%) 90 (25%) 64 (18%)  
   Poor (n = 237) 34 (14%) 28 (12%) 175 (74%)  
Tumor size and grade        0.42 (<0.0001)
   ≤2 cm and well or ≤1 cm and moderate (n = 285) 204 (72%) 60 (21%) 21 (7%)  
   >2 cm and well, or 1.1–2 cm and moderate, or ≤2 cm and poor (n = 330) 143 (41%) 63 (19%) 133 (40%)  
   >2 cm and moderate/poor (n = 175) 41 (23%) 39 (22%) 95 (54%)  
  1. 1Spearman rank correlation