Table 3.

Multivariate analysis of prognostic factors influencing RFS

Variable	HR	95% CI	P‐value
Age
≥70 vs. <70 years	1.867	0.594–5.636	0.27
Sex
Male vs. female	1.520	0.518–4.729	0.45
Masaoka stage
I, II vs. III, IV	0.087	0.015–0.328	0.0001
Histology
A, AB vs. B1, B2, B3	0.713	0.107–2.834	0.66
FBs
Present vs. absent	7.996	1.030–165.2	0.046

CI, confidence interval; FBs, fibrous bands; HR, hazard ratio; RFS, recurrence‐free survival.