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Table 3 Results of multivariate analysis for independent variables associated with death and EFS

From: What is the impact of local control in Ewing sarcoma: analysis of the first Brazilian collaborative study group – EWING1

  EFS p LF p
Variables HR (95% CI) HR (95% CI)
Type of treatment
 Surgery 1.00   1.00  
 Surgery + Radiotherapy 0.88 (0.28–2.74) 0.829 * *
 Radiotherapy 1.84 (0.63–5.41) 0.267 1.01 (0.08–12.8) 0.991
Age group     -
  ≤ 15 years 1.00   -  
  > 15 years 2.12 (0.96–4.71) 0.064 -  
Risk group     -
 Low 1.00   -  
 High 1.41 (0.53–3.71) 0.489 -  
LDH
  ≥ 1.5 x ULN -   6.28 (0.50–79.1) 0.155
  < 1.5 x ULN -   1.00  
  1. *It is not possible to estimate risk because the interval tends to infinity
  2. EFS event-free survival, LF local failure, HR hazard ratio, 95% CI, 95% confidence interval, LDH lactate dehydrogenase, ULN upper limit of normal