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Table 3 Association between LINE-1 DNA methylation in blood leukocytes and adenoma risk (n = 280)

From: A cross-sectional study of global DNA methylation and risk of colorectal adenoma

LINE-1 methylation quartile

Normal

Adenoma

  

Adjusted*

 

N

(%)

N

(%)

OR

(95% CI)

OR

95% (CI)

p-value**

Both sexes***

         

1 Low

47

(64%)

26

(36%)

1.38

(0.67-2.86)

1.39

(0.67-2.89)

0.37

2

45

(61%)

29

(39%)

1.61

(0.79-3.31)

1.67

(0.81-3.44)

0.17

3

48

(69%)

22

(31%)

1.15

(0.55-2.41)

1.13

(0.54-2.39)

0.75

4 High

45

(71%)

18

(29%)

1.00

referent

1.00

referent

 

Standardized continuous

  

0.85

(0.66-1.09)

0.83

(0.65-1.07)

0.15

Males

         

1 (79.87 - 87.42)

15

(45%)

18

(55%)

1.40

(0.50-3.93)

1.38

(0.49-3.89)

0.54

2 (87.43 - 89.55)

14

(39%)

22

(61%)

1.83

(0.66-5.09)

1.85

(0.67-5.17)

0.24

3 (89.56 - 92.06)

15

(52%)

14

(48%)

1.09

(0.38-3.15)

1.06

(0.37-3.08)

0.92

4 (92.07 - 95.94)

14

(54%)

12

(46%)

1.00

referent

1.00

referent

 

Standardized continuous

  

0.72

(0.47-1.09)

0.71

(0.47-1.08)

0.11

Females

         

1 (75.13 - 85.59)

32

(80%)

8

(20%)

1.29

(0.40-4.15)

1.36

(0.42-4.44)

0.61

2 (85.60 - 87.86)

31

(82%)

7

(18%)

1.17

(0.35-3.87)

1.27

(0.38-4.29)

0.70

3 (87.87 - 89.95)

33

(80%)

8

(20%)

1.25

(0.39-4.02)

1.28

(0.39-4.16)

0.68

4 (89.96 - 97.95)

31

(64%)

6

(16%)

1.00

referent

1.00

referent

 

Standardized continuous

  

0.94

(0.63-1.41)

0.91

(0.61-1.38)

0.66

  1. *Odds ratios are adjusted for age (continuous).
  2. **Age adjusted Wald chi square p-value.
  3. ***LINE-1 methylation quartiles based on sex-specific quartiles.