High-dose stereotactic body radiotherapy using CyberKnife® for stage I peripheral lung cancer: a single-center retrospective study

Table 3 Results of univariate analysis for LC, PFS, OS, and LPFS

Characteristics	Patients (n)	2-year LC (%)	p value	2-year PFS (%)	p value	2-year OS (%)	p value	2-year LPFS (%)	p value
Age (years)
> 75	45	97	0.822	83	0.793	85	0.454	86	0.663
≤ 75	51	96		84		94		90
Sex
Male	61	95	0.815	75	0.052	86	0.353	84	0.684
Female	35	100		100		97		97
T classification
T1a/T1b	61	100	0.044	95	< 0.001	98	< 0.001	98	< 0.001
T1c/T2a	35	96		65		76		72
History of lung surgery
Yes	29	96	0.939	82	0.883	88	0.689	85	0.841
No	67	97		85		91		90
History of ischemic heart disease
Yes	24	100	0.128	92	0.402	90	0.920	90	0.497
No	72	95		82		90		87
Histological diagnosis
Yes	21	88	0.277	67	0.002	89	0.123	79	0.049
No	75	90		88		98		91
Operability
Operable	25	100	0.226	85	0.786	96	0.747	96	0.411
Inoperable	71	95		83		88		86

LC local control, PFS progression-free survival, OS overall survival, LPFS local progression-free survival

ISSN: 1748-717X