Table 2. Clinical characteristics of patients.

Factors		Number
Age	≤45	87
	>45	140
Gender	Female	107
	Male	120
Stage	Stage I	32
	Stage II	90
	Stage III	74
	Stage IV	24
T stage	T1	4
	T2	32
	T3	163
	T4	28
M stage	M0	166
	M1	24
	MX	37
N stage	N0	130
	N1	57
	N2	40
BMI (kg/m2)	18.5≤BMI<25	77
	25≤BMI<30	76
	BMI≥30	74

MX: indeterminate pathological stage.