Table 4.

Univariate log-rank analysis conducted on D2

Variable	HR (95% CI)	P value
Age (< 60 vs. ≥ 60)	0.66 (0.13–3.35)	0.621
T-stage (T1/T2 vs. T3/T4)	2.18 (1.10–4.31)	0.024
Histology (W/M vs. poorly)	3.66 (1.12–11.98)	0.032
Chemotherapy (yes vs. no)	3.89 (0.92–16.47)	0.065
Invasion depth (out vs. in)	1.87 (1.03–3.39)	0.039
Tumor diameter (< 5 cm vs. ≥ 5 cm)	2.15 (0.88–5.22)	0.091
Manual nuclear atypia grading (low vs. high)	3.08 (0.90–10.49)	0.072
NGAHIC (positive vs. negative)	4.14 (1.28–13.29)	0.017

CI confidence interval, HR hazard ratio; W/M: well and moderate-differentiated, poorly: poorly differentiated, out: out of serosa, in: invasion of serosa

P value in italic is statistically significant, P < 0.05