Table 4.

Final multivariate models of factors associated with the risk of biochemical recurrence after robot-assisted radical prostatectomy in 458 cases.

Factors	Multivariate analysis (Cox proportional hazards)
	HR	95%CI	p-value
Clinical model
PSA	1.064	1.020–1.110	0.004
BPC	1.015	1.002–1.029	0.027
BGG 1	Ref
BGG 2-3	2.966	1.441–6.106	0.003
BGG 4-5	3.122	1.176–8.289	0.022
Pathological model
PGG 1	Ref
PGG 2-3	Ref
PGG 4-5	3.194	1.575–6.058	0.001
pT2	Ref
pT3a	Ref
pT3b	3.091	1.575–6.058	0.001
Negative surgical margin	Ref
Positive surgical margin	2.287	1.197–4.370	0.012
PSA-Pathological combined model
PSA	1.058	1.015–1.102	0.007
PGG 1-3	Ref
PGG 4-5	1.961	0.911–4.222	0.085
pT2	Ref
pT3a	Ref
pT3b	2.631	1.210–5.719	0.015
Negative surgical margin	Ref
Positive surgical margin	2.401	1.119–5.018	0.020
Final PSA-Pathological combined model (*)
PSA	1.066	1.024–1.109	0.002
pT2-3a	Ref
pT3b	3.053	1.428–6.525	0.004
Negative surgical margin	Ref
Positive surgical margin	2.680	1.312–5.476	0.007

See Table 1 for abbreviations; (*) adjusted HR.