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Table 1 Clinical demographics of the 134/144 bp dominant and the 166 bp dominant cfDNA samples

From: Quantitative characterization of tumor cell-free DNA shortening

 

134/144 bp Dominant (n = 35)

166 bp Dominant (n = 35)

p-value

Gender

Male

28

21

0.1165a

Female

7

14

Age

> = 60

18

26

0.0824a

< 60

17

9

Median

60

65

0.0046b

Primary tumor site

Lung

19

22

0.0644c

Gastrointestinal tract

5

10

Liver

4

0

Other

7

3

Stage

III

3

1

0.6859c

IV

21

21

Unknown

11

13

Metastasis

Yes

20

18

0.8106a

No

15

17

Surgery within 30 days

Yes

0

1

1.0000a

No

35

34

Radiation therapy within 30 days

Yes

3

1

0.6139a

No

32

34

Chemotherapy within 30 days

Yes

4

8

0.3420a

No

31

27

Targeted therapy within 30 days

Yes

4

8

0.3420a

No

31

27

  1. asignificance calculated using Fisher’s exact test
  2. bsignificance calculated using Wilcoxon rank sum test
  3. csignificance calculated using Freeman-Halton extension of Fisher’s exact test