. 2016 Apr 7;23(1):57–64. doi: 10.1093/icvts/ivw089

Table 3:

Multivariate analysis of factors correlating with OS and LPFS

Risk factors	OS			LPFS
Risk factors	P-value	OR	95% CI	P-value	OR	95% CI
Age^a	0.598	1.0101	0.974–1.046	0.172	1.031	0.987–1.077
Dimension^b (<3 vs ≥3 cm)	0.333	1.617	0.609–4.312	0.010	3.174	1.314–7.666
DFI^b (<3 vs ≥3 years)	0.206	0.617	0.292–1.304	0.600	1.296	0.492–3.414
Histology^b (colon versus other type)	0.924	1.038	0.482–2.237	0.652	0.800	0.303–2.112
One-month LD^b	0.507	1.504	0.451–5.014	0.001	5.289	2.011–13.913

OR: odd ratio; 95% CI: 95% confidential interval; DFI: disease-free interval, defined as the time between the primary tumour and the first lung metastasis; one-month LD: presence of local disease at 1 month after RFA; OS: overall survival; LPFS: local progression-free survival; RFA: radiofrequency ablation.

^aContinuous variable.

^bCategorical variables.