TABLE 3

Correlation to OS

Variable	Hazard ratio	95% CI	P
Univariate
Total no. of ²²³Ra doses	0.397	0.292–0.539	<0.0001
All six ²²³Ra doses vs. < six doses	0.158	0.069–0.358	<0.0001
Nodal metastases	1.829	0.830–4.031	0.1342
Visceral metastases	1.874	0.798–4.405	0.1496
Visual analysis
Fluoride PET/CT scan
20–50	–	–	–
>50	2.520	0.507–12.530	0.2587
Super scan	7.484	1.557–35.979	0.0120
Bone scan
20–50	–	–	–
>50	2.619	0.869–7.891	0.0871
Super scan	1.360	0.501–3.690	0.5466
Qualitative analysis
TLF₁₀	1.765	1.038–3.001	0.0361
FTV₁₀	1.920	1.111–3.317	0.0194
hSUVmax	1.003	0.983–1.022	0.7989
Mean₁₀	0.928	0.795–1.083	0.3443
Multivariate
Total no. of ²²³Ra doses	0.386	0.252–0.591	<0.0001
All six ²²³Ra doses vs. < six doses	0.120	0.034–0.427	0.0011
TLF₁₀	5.990	1.306–27.475	0.0212