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Table 1 Demographic and clinical features of the renal cell carcinoma (RCC) patients and normal controls in this study1

From: Circulating miR-200a is a novel molecular biomarker for early-stage renal cell carcinoma

Variables

Training phase

Validation phase

RCC tissue

Normal controls

RCC

P - value

Normal controls

RCC

P - value

n = 26

n = 26

n = 73

n = 73

n = 10

Average age (years)

51.7 ± 8.2

53.7 ± 10.5

0.430 2

54.9 ± 8.0

52.7 ± 13.3

0.234 2

55.7 ± 10.5

Age (years)

  

0.482 3

  

0.725 3

 

  ≤ 59

22

20

 

48

50

 

7

  > 59

4

6

 

25

23

 

3

Sex

  

0.080 3

  

0.118 3

 

 Male

14

20

 

30

21

 

7

 Female

12

6

 

43

52

 

3

Smoking status

  

0.714 3

  

0.644 3

 

 Ever and Current

4

5

 

12

10

 

2

 Never

22

21

 

61

63

 

8

Alcohol consumption

  

0.532 3

  

0.682 3

 

 Ever or Current

6

8

 

14

16

 

3

 Never

20

18

 

59

57

 

7

Histological types

 Clear cell carcinoma

–

26

 

–

73

 

10

 Other

–

0

 

–

0

 

0

TNM Stage

 I

–

19

 

–

52

 

3

 II

–

3

 

–

11

 

6

 III

–

0

 

–

2

 

1

 IV

–

3

 

–

5

 

0

 Unknown

–

1

 

–

3

 

0

  1. 1Data are mean ± standard deviation. 2P, student-t test;3P, two-sided χ2 test
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