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Table 2 Average methylation and breast cancer risk in four studies

From: Epigenome-wide association study reveals decreased average methylation levels years before breast cancer diagnosis

Study

Method

Cases

Controls

Diff

  

Mean (%)

SD (%)

IQR

Mean (%)

SD (%)

IQR

(%)

EPIC

450k

53.00

0.39

[52.68–53.27]

53.18

0.35

[52.97–53.40]

−0.18

NOWAC

450k

54.02

0.45

[53.73–54.32]

54.02

0.41

[53.77–54.29]

0.00

MCCSa

450k

51.86

1.00

nd

51.95

1.01

nd

−0.09

BGSb

WGBS

48.12

–

–

48.30

–

–

−0.18

  1. nd not done (not reported)
  2. a[23]
  3. bFlanagan and Garcia-Closas, unpublished data