Table 3.

Categorical multivariable analysis

		BF (Competing Risks)			DM (Competing Risks)			OM (Cox)
Covariate	Groups	HR	95% CI	p-value	HR	95% CI	p-value	HR	95% CI	p-value
RT Dose	<75 Gy	Ref			Ref			Ref
	75-79.9 Gy	0.91	0.46-1.80	0.795	0.37	0.13-1.03	0.058	0.80	0.42-1.54	0.509
	≥80 Gy	0.28	0.10-0.74	0.011	0.09	0.01-0.52	0.007	0.42	0.19-0.94	0.035
PSA	<10	Ref			Ref			Ref
	10-20	0.61	0.25-1.45	0.262	0.38	0.08-1.84	0.228	1.40	0.71-2.75	0.333
	≥ 20	1.78	0.93-3.42	0.084	1.15	0.35-3.80	0.821	1.44	0.76-2.71	0.266
T-category	T1	Ref			Ref			Ref
	T2	1.07	0.38-3.03	0.900	0.62	0.12-3.25	0.570	1.25	0.57-2.75	0.584
	T3/T4	2.74	0.89-8.40	0.079	3.44	0.74-16.05	0.116	2.40	1.04-5.55	0.041
	TX	0.68	1.07-4.28	0.679	0.78	0.03-17.91	0.879	0.68	0.14-3.38	0.641
ADT	None	Ref			Ref			Ref
	< 6 mo	0.72	0.26-1.95	0.511	0.37	0.06-2.30	0.286	0.77	0.33-1.79	0.536
	6-23 mo	0.87	0.34-2.23	0.767	3.37	0.62-18.38	0.160	1.19	0.56-2.55	0.649
	≥24 mo	0.38	0.15-0.92	0.033	1.10	0.26-4.62	0.892	0.63	0.29-1.39	0.254
Age	40-59	Ref			Ref			Ref
	60-69	0.59	0.19-1.51	0.240	0.73	0.18-3.02	0.666	1.59	0.49-5.12	0.440
	70-79	0.46	0.16-1.33	0.153	0.50	0.10-2.54	0.406	2.68	0.90-8.00	0.078
	80-89	1.19	0.27-5.27	0.815	1.14	0.14-9.17	0.902	2.78	0.64-12.04	0.171
Technique	Conventional	0.61	0.17-2.18	0.451	0.63	0.12-3.32	0.584	1.03	0.36-2.92	0.954
	3DCRT	Ref			Ref			Ref
	IMRT	0.63	0.21-1.92	0.420				1.10	0.30-4.06	0.887

For technique, the referent group was 3DCRT except for the distant metastasis (DM) endpoint, where 3DCRT and IMRT were combined due to the small number of events. Other abbreviations: Prostate specific antigen (PSA), androgen deprivation therapy (ADT), palpation tumor category (T-category), radiation therapy (RT), intensity modulated RT (IMRT), 3D conformal RT (3DCRT)