TABLE 5

Univariate Analysis of Image-Derived Covariates for OS

	NG_35%		ORG_35%		NG_100%
Parameter	Hazard ratio	P	Hazard ratio	P	Hazard ratio	P
Primary-tumor metabolic volume	1.009 (1.003–1.016)	0.004^*	1.010 (1.003–1.016)	0.003^*	1.009 (1.003–1.015)	0.004^*
Primary-tumor SUV_mean	1.00 (0.95–1.06)	0.9	1.00 (0.94–1.05)	0.8	1.00 (0.94–1.06)	0.9
Primary-tumor TLG	1.08 (1.02–1.14)	0.004^*	1.08 (1.03–1.13)	0.003^*	1.08 (1.03–1.14)	0.003^*
Summed TLG	1.09 (1.03–1.14)	0.002^*	1.08 (1.03–1.14)	0.002^*	1.08 (1.03–1.14)	0.002^*
Entropy	0.3 (0.2–1.8)	0.3	0.4 (0.1–1.2)	0.1	0.7 (0.3–2.0)	0.5
Dissimilarity	0.9 (0.70–1.1)	0.2	0.9 (0.7–1.0)	0.09	0.9 (0.8–1.1)	0.2
Zone percentage	0.01 (0–16)	0.2	0.002 (0–1.5)	0.07	0.3 (0–79)	0.7
High-intensity emphasis	0.998 (0.996–1.00)	0.1	0.998 (0.996–1.00)	0.06	0.998 (0.996–1.00)	0.07

↵* Statistically significant.
Data in parentheses are 95% confidence intervals. Hazard ratios are per 100-unit change for TLG and per 1-unit change for other parameters.