Mass spectrometry-based serum peptide profiling in hepatocellular carcinoma with bone metastasis

Table 1 Patient characteristics, n (%)

Variable	With bone metastasis (n = 66)	Without bone metastasis (n = 72)
Age, yr
Range	23-84	22-78
Mean	58	59
Sex
Male	46 (70)	53 (71)
Female	20 (30)	19 (29)
Liver resection
With	55 (83)	58 (81)
Without	11 (17)	14 (19)
Set
Training set	38 (58)	38 (53)
Validation set	28 (42)	34 (47)
TNM stage of HCC
I	0	0
II	0	8
III	0	64
IV	66	0
Method for
metastasis detection1		/
MRI/CT	54
ECT/SPET-CT	66
PET-CT	12

¹Multiple methods were used to detect bone metastasis. TNM: Tumor node metastasis; HCC: Hepatocellular carcinoma; MRI: Magnetic resonance imaging; PET-CT: Positron emission tomography-computed tomography.