Table 4 Multivariate analysis for local control (LC) and overall survival (OS)

Gender (female vs. male)

n.s.

0.56 (0.34-0.88)

0.012*

Tumor origin (primary vs. metastatic lung tumors)

0.21 (0.09-0.47)

<0.001*

0.45 (0.28-0.73)

0.001*

Tumor diameter (per 1 cm increase)

1.70 (1.17-2.45)

0.005*

1.70 (1.30-2.21)

<0.001*

SUVmax (≥ 5.9 vs. < 5.9)

1.50 (0.66-3.61)

0.331

1.41 (0.81-2.48)

0.218

Prescription dose (BED10: > 105 Gy vs. ≤ 105 Gy)

0.51 (0.27-0.93)

0.029*

n.s

Date of treatment (2001–2005 vs. 2006–2011)

2.22 (1.19-4.23)

0.011*

n.s