Table 2.

Results of univariable Cox proportional hazard regression for continuous variables.

Variable	Hazard Ratio	95% Confidence Interval	P
Volume (cm3)	1.01	[1.00, 1.02]	0.011
Age	1.01	[0.87, 1.17]	0.911
Pre FDG*
SUVmean	1.12	[0.91, 1.40]	0.287
SUVmax	1.09	[0.99, 1.20]	0.080
Pre FLT
SUVmean	1.07	[0.86, 1.35]	0.543
SUVmax	1.02	[0.95, 1.01]	0.565
Pre Cu-ATSM
SUVmean	1.28	[0.84, 1.94]	0.245
SUVmax	1.08	[0.95, 1.23]	0.226
Mid FLT
SUVmean	2.76	[1.19, 6.40]	0.018
SUVmax	1.36	[1.09, 1.68]	0.006
Mid Cu-ATSM
SUVmean	1.63	[0.88, 3.02]	0.124
SUVmax	1.06	[0.96, 1.17]	0.288
$R_{\text{SUVmean}}^{\text{FLT}}$	0.11	[0.02, 0.64]	0.013
$R_{\text{SUV}max}^{\text{FLT}}$	0.15	[0.02, 1.11]	0.064
$R_{\text{SUVmean}}^{\text{Cu}-\text{ATSM}}$	0.63	[0.10, 3.97]	0.620
$R_{\text{SUV}max}^{\text{Cu}-\text{ATSM}}$	0.94	[0.19, 4.58]	0.941
ρFDG,FLT	5.08	[0.41, 62.2]	0.204
ρFDG,Cu-ATSM	0.99	[0.04, 25.8]	0.997
ρFLT,Cu-ATSM	3.82	[0.62, 23.7]	0.150
${\rho }_{\text{pre},\text{mid}}^{\text{FLT}}$	3.28	[0.17, 61.6]	0.428
${\rho }_{\text{pre},\text{mid}}^{\text{Cu}-\text{ATSM}}$	2.36	[0.02, 275]	0.724

^*see Table 1 for variable definitions