Table 2.

Associations between LN related factors and patient survival in derivation cohort

	N	Overall survival 1 year, 3 years	p-Value
No. of nodes taken			0.592
1–15	149	80%, 36%
16–20	155	70%, 40%
21–25	125	70%, 31%
>25	114	69%, 34%
No. of positive nodes			<0.001a
0	148	84%, 62%
1–2	132	72%, 35%
3–5	146	65%, 26%
>5	118	57%, 14%
LN ratio			<0.001a
0.00	147	85%, 63%
0.01–0.15	142	74%, 38%
0.16–0.25	114	59%, 18%
>0.25	140	60%, 18%

Survival is reported as Kaplan–Meier estimates at 1 and 3 years, and p-values are from Log-Rank tests based on all available follow-up.

^aSignificant at p < 0.05.