Table 4.

Univariate and multivariate analyses of progression-free survival

	Univariate analysis		Multivariate analysis
	Hazard ratio (95% CI)	p value	Hazard ratio (95% CI)	p value
Age	0.93–3.59	0.080	1.15–4.74	0.020
MTV	0.10–1.10	0.072	0.08–1.01	0.051
GLCM contrast	0.25–1.07	0.076	0.18–1.09	0.075
NGLDM busyness	0.18–0.94	0.036	0.17–3.93	0.81
GLZLM LZE	0.25–1.01	0.055	0.26–3.01	0.85
GLZLM LZLGE	0.19–0.86	0.019	0.14–4.14	0.75

CI confidence interval, MTV metabolic tumour volume, GLCM grey-level co-occurrence matrix, NGLDM neighbourhood grey-level different matrix, GLZLM grey-level zone length matrix, LZE long-zone emphasis, LZLGE long-zone low grey-level emphasis