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Table 1 Baseline characteristics with averages

From: Rigor prophylaxis in stage IV melanoma and renal cell carcinoma patients treated with high dose IL-2

  Meperidinea (N = 42) Tramadolb (N = 49)  
Mean Sd Mean Sd p-value
Age at IL2 51.52 9.25 53.90 9.04 0.220
IL2 dose 18.14 8.24 18.02 7.34 0.940
  1. aGroup 1 includes patients who were pretreated with meperidine
  2. bGroup 2 included those who were pretreated with tramadol