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

Table 2:

Univariate analysis of factors correlating with OS and LPFS

Risk factor	OS P-value	LPFS P-value
Age (years)^a	0.53	0.33
Gender^b (male versus female)	0.14	0.69
Type of approach^b (CT versus US)	0.990	0.310
Lesion dimension^b (<3 vs ≥3 cm)	0.051	0.005
Cancer type^b (colon versus other type)	0.84	0.23
Previous lung resection^b (yes versus no)	0.37	0.35
DFI-1^b	0.66	0.94
DFI-2^b	0.44	0.96
DFI-3^b	0.29	0.96
Number of treated lesion^b (one versus more lesions)	0.35	0.16
One-month LD^b (yes versus no)	0.056	<0.001

CT: computed tomography; US: ultrasonography; DFI-1: disease-free interval (0–11 months vs more than 11 months); DFI-2: disease-free interval (0–23 months vs more than 24 months); DFI-3: disease-free interval (0–35 months vs more than 36 months); 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.