Stereotactic body radiotherapy using gated radiotherapy with real-time tumor-tracking for stage I non-small cell lung cancer

Table 2 Univariate analyses for local control (LC) and overall survival (OS)

	P value
Variables	LC	OS
Tumor site
Lower lobe vs. others	0.25	0.16
Gender
Female vs. others	0.02*	0.66
T stage
T1a vs. others	0.06	0.01*
Primary histology
Adenocarcinoma vs. others	0.16	0.53
Maximum amplitude of marker movement
≥ 3 cm vs. < 3 cm	0.06	0.16
FDG-PET before SBRT (n)
yes vs. no	0.03*	0.30
Dose prescription (n)
48Gy/4fr at isocenter vs. 40Gy/4fr to the 95% volume of PTV	0.35	0.38

ISSN: 1748-717X