Table 3.

Univariate and multivariate analysis of biochemical failure and distant metastasis in the EBRT cohort

Variables	Biochemical failure			Distant metastasis
	Univariate	Multivariate		Univariate	Multivariate
	P	P	HR	P	P	HR
Pretreatment PSA (≤10 vs. >10 ng/mL)	<0.001	0.018	2.698	0.321
Gleason score (4–6 vs. 7–10)	0.068	0.030	2.972	0.241	0.195	3.964
T‐stage (T1c–T2a vs. T2b–T3)	0.001	0.010	2.641	0.001	0.013	13.930
Prescribed dose (≤76 vs. ≥78 Gy)	0.015	0.060	0.413	0.266
nPSA12 (≤1.0 vs. >1.0 ng/mL)	0.001	0.005	3.516	0.023	0.041	8.741

EBRT, external beam radiotherapy; PSA, prostate‐specific antigen; nPSA12, prostate‐specific antigen nadir within 12 months; HR, hazard ratio. Boldface P values are statistically significant (< 0.05).