Table 1. Baseline characteristics of patients with melanoma.

Characteristics	N(%)
Age
<60	241(51.3)
≥60	221(47.0)
unknown	8(1.7)
Gender
Male	290(61.7)
Female	180(38.3)
AJCC stage
I	77(16.4)
II	140(29.8)
III	171 (36.4)
IV	23(4.9)
unknown	59(12.5)
Tumor
T0	23(4.9)
T1	42(8.9)
T2	78(16.6)
T3	90(19.1)
T4	153(32.6)
unknown	84(17.9)
Lymph Node
N0	235(50.0)
N1	74(15.7)
N2	49(10.4)
N3	55(11.7)
Nx	57(12.2)
Metastasis
M0	418(88.9)
M1	24(5.2)
Mx	28(5.9)