Table 4 Variable assignment

X1

Dukes stage

0 = A + B stage, 1 = C stage

X2

Degree of differentiation

0 = high, 1 = medium, 2 = low

X3

Lymph node metastasis

0 = none, 1 = yes

X4

CEA

0=<6.85 ng/ml, 1 = ≥ 6.85 ng/ml

X5

Alb

0=>29.33 g/L, 1 = ≤ 29.33

X6

D-dimer

0=<178.69 μg/L, 1 = ≥ 178.69 μg/L

X7

PLAC1

0 = negative, 1 = positive

X8

Netrin-1

0 = negative, 1 = positive

Y

Live metastasis

0 = unhappen, 1 = happen