Table 4.

Nomogram scoring system.

Variables	Points	Variables	Points
Age at diagnosis (years)		M-stage
<50	0	M0	0
50–69	7	M1	65
≥70	38	ELN
N-stage		≤13	28
N0	0	>13	0
N1	38	LND
N2	45	≤9.3%	0
N3	100	>9.3%	53
3-Year OS probability	Points	5-Year OS probability	Points
0.1	218	0.1	191
0.2	190	0.2	164
0.3	169	0.3	142
0.4	148	0.4	121
0.5	128	0.5	100
0.6	102	0.6	78
0.7	78	0.7	50
0.8	41	0.8	28
0.9	0

ELN, Examined lymph node; LND, Lymph node density; OS, Overall survival.