TABLE 1.

Clinical characteristics of patients with breast cancer.

Variables	No. of patients	Percentage (%)
Age (years)
≤55	471	42.9
>55	626	57.1
Unknown	19	1.7
Gender
Female	1085	98.9
Male	12	1.1
Pathological stage
I	183	16.7
II	621	56.6
III	249	22.7
IV	20	1.8
Unknown	24	2.2
T stage
T1	281	25.6
T2	635	57.9
T3	138	12.6
T4	40	3.6
Unknown	3	0.3
N stage
N0	516	47.0
N1	364	33.2
N2	120	10.9
N3	77	7.0
Unknown	20	1.8
M stage
M0	912	83.1
M1	22	2.0
Unknown	163	14.9