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Table 2 Baseline characteristics with number of patients

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

 

Meperidinea (N = 42)

Tramadolb (N = 49)

 

N pts

%

N pts

%

p-value

Race

    

0.177

 White

43

88%

36

86%

 

 Hispanic

3

6%

4

10%

 

 American Indian

3

6%

0

0%

 

 Unknown

0

0%

2

5%

 

Gender

    

0.232

 Female

14

29%

17

40%

 

 Male

35

71%

25

60%

 

Previous treatment

17

35%

7

17%

0.052

Malignancy

    

0.088

 Renal Cell Carcinoma

39

80%

26

63%

 

Melanoma

10

20%

15

37%

 

Tramadol

10

24%

49

100%

< 0.001

  1. aGroup 1 includes patients who were pretreated with meperidine
  2. bGroup 2 included those who were pretreated with tramadol