Table 2.

Cox regression analysis of biochemical disease free survival (BDFS) and overall survival (OS) before and after propensity score matching (PSM)

	Biochemical disease free survival						Overall survival
	Before PSM			After PSM			Before PSM			After PSM
	HR	95% CI	P value	HR	95% CI	P value	HR	95% CI	P value	HR	95% CI	P value
Age >75	0.29	0.03–2.37	0.253	4.08	0–1	1.000	1.54	0.62–3.85	0.348	1.46	0.42–5.05	0.549
PS	1.26	0.49–3.20	0.624	1.09	0.26–4.44	0.903	1.93	1.08– 3.42	0.025	0.35	0.05–2.55	0.306
Previous abdominal surgery	1.68	0.45–6.28	0.436	1.58	0.35–7.09	0.545	1.27	0.50–3.24	0.612	1.25	0.36–4.29	0.719
Hypertension	1.45	0.36–5.83	0.593	1.08	0.24–4.87	0.911	1.20	0.48–3.00	0.687	0.77	0.23–2.53	0.670
Diabetes mellitus	4.94	0–1	1	5.00	0–1	1.000	2.84	1.02– 7.93	0.045	0.77	0.09–6.07	0.809
Initial PSA	1.10	0.96–1.27	0.155	1.13	0.97–1.33	0.111	1.04	0.93–1.16	0.414	1.05	0.91–1.21	0.481
Gleason Score	1.32	0.35–4.95	0.678	1.96	0.43–8.77	0.379	1.58	0.64–3.91	0.315	0.72	0.21–2.47	0.606
NCCN class	1.33	0.35–4.96	0.671	2.22	0.43–11.49	0.338	1.63	0.64–4.16	0.300	0.94	0.28–3.09	0.925
ADT	1.01	0.21–4.90	0.982	1.20	0.23–6.18	0.828	1.48	0.53–4.12	0.448	2.04	0.59–6.99	0.254
RT treatment	1.11	0.29–4.22	0.868	0.92	0.20–4.14	0.920	0.60	0.22–1.61	0.312	1.28	0.36–4.53	0.698