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Table 4 The analysis of patients of each lymph node stage for TV and GTD groups

From: Tumor volume is more reliable to predict nodal metastasis in non-small cell lung cancer of 3.0 cm or less in the greatest tumor diameter

N stage Total Negative (%) Positive (%) P value N = 1 (%) N = 2 (%) P value
TV 285    0.004    0.002
 V1 ≤ 0.9 cm3 38 32 (84.2) 6 (15.8)   3 (50) 3 (50)  
 V2 0.9–3.9 cm3 126 98 (77.8) 28 (22.2)   12 (42.9) 16 (57.1)  
 V3 3.9–14.2 cm3 121 74 (61.2) 47 (38.8)   15 (31.9) 32 (68.1)  
GTD     0.083    0.236
 G1 ≤ 1.0 cm 5 4 (80.0) 1 (20.0)   0 (0.0) 1 (100.0)  
 G2 1.0–2.0 cm 90 72 (80.0) 18 (20.0)   6 (33.3) 12 (66.7)  
 G3 2.0–3.0 cm 190 128 (67.4) 62 (32.6)   24 (38.7) 38 (61.3)