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Table 3 Univariate and multivariate analysis for radiographic predictors of Local Control (LC) for all patients

From: Local Control Rates of Metastatic Renal Cell Carcinoma (RCC) to Thoracic, Abdominal, and Soft Tissue Lesions Using Stereotactic Body Radiotherapy (SBRT)

  Univariate Multivariate
Variable P-value HR (95 % CI) P-value
Total Dose (Gy) 0.001* 0.999 (0.998 to 1.001) 0.209
Number of Fractions 0.189 1.004 (0.849 to 1.185) 0.966
Dose per Fractions (≥9 Gy) 0.021 0.726 (0.469 to 1.124) 0.153
BED (100 Gy) 0.005* 0.264 (0.022 to 3.119) 0.293
Site (Thorax vs Other) 0.185 1.941 (0.515 to 7.323) 0.329
Time from Primary Diagnosis 0.318 0.996 (0.980 to 1.012) 0.663
Male Gender 0.048 0.481 (0.120 to 1.915) 0.301
Age 0.610 0.990 (0.916 to 1.071) 0.816
Smoker 0.123 0.276 (0.058 to 1.311) 0.107
Greater than 5 Metastatic Lesions 0.808 0.674 (0.170 to 2.673) 0.577
Pre-Radiation Systemic Therapy 0.517 2.299 (0.605 to 8.724) 0.223
Post-Radiation Systemic Therapy 0.332 0.201 (0.038 to 1.037) 0.056
  1. BED biologic effective dose, HR hazard ratio, CI confidence interval
  2. *-Statistically significant values