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. 2014 Jun;26(3):323–330. doi: 10.3978/j.issn.1000-9604.2014.06.07

Table 1. Clinical and pathological characteristics of patients.

Patient characteristics No. of patients (%)
Gender
    Male 438 72.4
    Female 167 27.6
Age
    <60 262 43.3
    ≥60 343 56.7
Differentiation
    Well, moderate 121 20.0
    Poorly 484 80.0
Tumor size (cm)
    <5 cm 312 51.7
    ≥5 cm 293 48.3
N category
    N0 106 17.5
    N1 126 20.8
    N2 172 28.4
    N3 201 33.2
Vascular or nerves invasion
    Negative 268 44.3
    Positive 337 55.7
Stage
    IIA 29 4.8
    IIB 127 21.0
     IIIA 113 18.7
    IIIB 145 24.0
    IIIC 191 31.5