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. 2014 Jul 2;9(7):e101065. doi: 10.1371/journal.pone.0101065

Table 1. Distribution of clinico-pathological characteristics of patients.

Characteristics All Cases (%) Training Set (%) Testing Set (%) p-value*
Number 267 125 125 0.9469
Age, yrs Median (range) 70 (22–96) 72 (22–96) 70 (25–95)
AJCC Stage
I–II 176 (65.9) 82 (65.6) 80 (64.0) 0.8947
III–IV 91 (34.1) 43 (34.4) 45 (36.0)
Gender
Male 122 (45.6) 55 (44.0) 59 (47.2) 0.7033
Female 145 (54.3) 70 (56.0) 66 (52.8)
Histotype
Adenocarcinoma 243 (91.0) 114 (91.2) 115 (92.0) 0.9114
Mucinous 24 (9.0) 11 (8.8) 10 (8.0)
Grade
G1-2 212 (78.2) 99 (79.2) 101 (80.8) 0.6091
G3 31 (20.9) 18 (14.4) 13 (10.4)
N/A 24 (3.8) 8 (6.4) 11 (8.8)

*testing the difference between training and testing set.