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Table 1: Patient characteristics and associations between lymph node metastases and variables
Patient Characteristics Lymph Node Metastases
Absent (n = 28) Present (n = 15) P value
Sex, N (%) 
    Male 29 (67) 20 (69) 9 (31) .67
    Female 14 (33) 8 (57) 6 (43) 
Age (mean ± SD) 58 ± 15 57 ± 14 59 ± 16 .48
Performance status 
    <2 35 (81) 23 (68) 12 (32) >.99
    ≥2 8 (19) 5 (63) 3 (38) 
T classification, N (%) 
    T1–2 34 (79) 26 (76) 8 (24) <.01
    T3–4 9 (21) 2 (22) 7 (78) 
N classification, N (%) 
    N0 32 (74) 25 (78) 7 (22) <.01
    N1–3 11 (26) 3 (27) 8 (72) 
Differentiation, N(%) 
    Well-moderate 38 (88) 25 (66) 13 (34) >.99
    Poor 5 (12) 3 (60) 2 (40) 
Tumor thickness (mm) (mean ± SD) 11.7 ± 7.3 8.5 ± 4.5 17.8 ± 7.8 <.0001
Sublingual distance (mm) (mean ± SD) 4.0 ± 4.4 5.5 ± 4.4 1.1 ± 2.4 <.005
Paralingual distance (mm) (mean ± SD) 4.7 ± 5.1 7.2 ± 3.3 0 ± 4.5 <.0001