TABLE 6

Multivariate Cox Regression Models for OS

Model	Variable	β	Hazard ratio	95% CI	P
5	Age (y)	0.035	1.036	1.001−1.073	0.047
	nSUV_peak of primary tumor	−0.152	0.859	0.717−1.030	0.101
	nSUV_peak of hepatic metastasis	0.363	1.438	1.080−1.916	0.013
	Size of hepatic metastasis (cm)	0.032	1.033	0.895−1.191	0.660
	Differentiation grade (poor)	1.344	3.836	1.255−11.724	0.018
6	Age (y)	0.032	1.032	0.997−1.069	0.070
	M/P ratio of SUV_peak	0.233	1.263	0.497−3.207	0.624
	Size of hepatic metastasis (cm)	0.112	1.118	0.986−1.269	0.082
	Differentiation grade (poor)	1.546	4.694	1.515−14.515	0.007
7	Age (y)	0.031	1.031	0.997−1.067	0.077
	MTV of hepatic metastasis (cm³)	0.000	1.000	0.993−1.007	0.914
	Size of hepatic metastasis (cm)	0.138	1.148	0.915−1.440	0.234
	Differentiation grade (poor)	1.635	5.127	1.756−14.975	0.003
8	Age (y)	0.031	1.031	0.997−1.067	0.077
	nTLG of hepatic metastasis (cm³)	0.001	1.001	0.998−1.003	0.643
	Size of hepatic metastasis (cm)	0.078	1.081	0.854−1.368	0.516
	Differentiation grade (poor)	1.651	5.214	1.783−15.248	0.003