Table 5 Univariate analysis of factors influencing local control
From: Radiosurgery and fractionated stereotactic body radiotherapy for patients with lung oligometastases
Covariate | HR (95% CI) | p-value |
|---|---|---|
Time between diagnosis of LM and SBRT (months) | ||
<12 | 1 | |
≥12 | 2.5 (1.1-6.0) | 0.027 |
Location of LM | ||
central | 1 | |
peripheral | 0.7 (0.2-1.7) | 0.412 |
Histology | ||
CRC | 1 | |
non-CRC | 0.2 (0.1-0.6) | 0.004 |
LM diameter (mm) | ||
≤10 | 1 | |
>10 | 2.2 (0.8-6.6) | 0.150 |
PTV (cm3) | ||
≤10 | 1 | |
>10 | 3.3 (0.9-11.3) | 0.053 |
Fractionation regimens | ||
SFRS | 1 | |
fSBRT | 2.7 (1.0-7.0) | 0.037 |
BED | ||
<100Gy | 1 | |
≥100 Gy | 2.7 (1.1-6.4) | 0.021 |