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Table 2 Cox regression analysis for time to Overall (any) failure

From: A retrospective, deformable registration analysis of the impact of PET-CT planning on patterns of failure in stereotactic body radiation therapy for recurrent head and neck cancer

  Overall Cohort (n = 96) Definitive SBRT Subgroup (n = 89)
Univariate Multivariate Univariate Multivariate
  p HR (95% CI) p HR (95% CI) p HR (95% CI) p HR (95% CI)
PET-CT Planning 0.042 0.53 (0.29, 0.98) 0.042 0.53 (0.29, 0.98) 0.011 0.45 (0.24, 0.83) 0.011 0.45 (0.24, 0.83)
Tumor volume (5 cc increase) 0.364 1.02 (0.98, 1.06) 0.441 Not entered 0.406 1.02 (0.98, 1.06) 0.517 Not entered
Cetuximab with SBRT 0.916 0.97 (0.54, 1.75) 0.957 Not entered 0.379 0.76 (0.42, 1.39) 0.271 Not entered
Interval from previous radiation to recurrence (3 months increase)
  0.167 0.98 (0.95, 1.01) 0.188 Not entered 0.221 0.98 (0.95, 1.01) 0.283 Not entered