Table 6.

Multivariate analysis (positron emission tomography).

	OS		PFS
	HR (95%CI)	p value	HR (95%CI)	p value
Histogram-based
MTV (≥66.5 vs. <66.5)	26.152 (2.089–327.392)	0.011 ∗	—	—
Kurtosis (≥2.9179 vs. <2.9179)	28.685 (2.067–398.152)	0.012 ∗	—	—
GLRLM
GLNU (≥178.7649 vs. <178.7649)	—	—	14.642 (2.661–80.549)	0.002 ∗

MTV, metabolic tumor volume; GLNU, gray-level nonuniformity; GLRLM, gray-level run length matrix; PFS, progression-free survival; OS, overall survival; HR, hazard ratio; CI, confidence interval. Asterisk (^∗) indicates significance with a p value of <0.05 (shown in bold).