Table 1. Univariate and multivariable analyses of risk factors for prostate-specific antigen recurrence.

	Univariate	Multivariable
	p-value	HR (95% CI)	p-value
Age	0.053	1.004 (0.934–1.080)	0.905
iPSA a	0.000	1.013 (0.990–1.037)	0.256
cT2b≤	0.182	0.637 (0.191–2.131)	0.464
bxGS b 8≤	0.052	1.656 (0.612–4.482)	0.321
GS8≤	0.011	1.787 (0.720–4.435)	0.210
pT3≤ e	0.002	0.985 (0.349–2.774)	0.977
RM c	0.000	4.966 (1.861–13.250)	0.001
pn d	0.221	0.839 (0.315–2.234)	0.725
pN	0.000	29.124 (1.599–530.412)	0.023
GCNT1 status	0.028	3.691 (1.070–12.736)	0.039

^a, pre-treatment prostate-specific antigen

^b, Gleason score

^c, cancer existence at the resected margin

^d, perineural invasion

^e, extracapsular extension

CI, confidence interval; GCNT1, core2 β-1,6-N-acetylglucosaminyltransferase-1; HR, hazard ratio; PSA, prostate-specific antigen.