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Table 2 Description of methylation-based measures

From: Methylation-based markers of aging and lifestyle-related factors and risk of breast cancer: a pooled analysis of four prospective studies

Methylation-based measures

MCCS

EPIC-IARC

EPIC-Italy

PLCO

Median (IQR)

R2,* (%)

Median (IQR)

R2,* (%)

Median (IQR)

R2,* (%)

Median (IQR)

R2,* (%)

Horvath age

54 (47; 60)

49

51 (44; 57)

60

52 (46; 57)

64

65 (62; 69)

39

Hannum age

62 (55; 68)

59

53 (46; 60)

64

59 (53.6; 62.9)

72

56 (52; 59)

48

PhenoAge

54 (46; 61)

39

44 (36; 51)

50

42 (35; 48)

56

51 (47; 56)

32

GrimAge

53 (48; 57)

66

52 (47; 57)

69

59 (55; 63)

62

46 (42; 50)

50

BMI score

0.0 (−0.6; 0.7)

16

0.0 (−0.7; 0.7)

14

−0.1 (−0.6; 0.7)

18

0.0 (−0.7; 0.6)

22

Smoking score

−0.2 (−0.6; 0.3)

41

−0.4 (−0.6; 0.1)

44

−0.4 (−0.6; 0.2)

54

−0.3 (−0.6; 0.2)

41

Alcohol score

−0.1 (−0.6; 0.6)

3

−0.1 (−0.7; 0.6)

7

−0.1 (−0.6; 0.6)

3

−0.1 (−0.6; 0.5)

9

  1. MCCS Melbourne Collaborative Cohort Study; EPIC European Prospective Investigation into Cancer and Nutrition; IARC International Agency for Research on Cancer; PLCO Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial; IQR Interquartile range
  2. *Variance explained of age, BMI, smoking and alcohol consumption by the corresponding methylation-based measures