Table 3.

Univariate Cox model analysis of DKI parameters and clinical factors for prediction of OS.

Parameters	Hazard ratio (HR)	p-value	95% CI
Mean K pre-RT	2.10	0.03*	[1.10, 4.02]
80 percentile K pre-RT	2.29	0.03*	[1.10, 4.71]
90 percentile K pre-RT	2.30	0.03*	[1.07, 4.96]
Gd-GTV pre-RT	0.74	0.25	[0.44, 1.23]
Age	1.72	0.14	[0.84, 3.52]
MGMT	0.45	0.2	[0.14, 1.47]
Dose	1.20	0.07	[0.98, 1.46]
EOR	0.34	0.52	[0.63,2.52]

*Significant with p < 0.05. The continuous data were normalized.