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Table 1 Clinical characteristics of the two cohorts of ovarian cancer patients from TCGA datasets

From: A risk score system based on a six-microRNA signature predicts the overall survival of patients with ovarian cancer

Parameters

Discovery cohort

(n = 234)

Validation cohort

(n = 233)

p-value

Method

Age (Mean ± SD)

59.6 ± 11.5

60.2 ± 11.7

0.57

t-test

Clinical stage

  I/II

14

16

0.82

χ2 test

  III/IV

219

214

  Null

1

3

  

Histologic grade

  G1

1

0

0.63

Fisher’s exact test

  G2

29

32

  G3

201

190

  Null

3

11

  

Lymphatic invasion

  No

28

32

0.67

χ2 test

  Yes

54

51

  Null

152

150

  

Living status

  Living

87

88

0.97

χ2 test

  Dead

147

145

Tumor residual disease

  1-10 mm

96

112

0.51

χ2 test

  11-20 mm

14

15

  > 20 mm

43

37

  Null

81

69