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Table 1 Subject demographics and characteristics

From: Normal breast tissue DNA methylation differences at regulatory elements are associated with the cancer risk factor age

Variable

Value in subjects (n = 100)

Age (median, range)

37.2 (18–82)

Body mass index (median, range)

27.6 (16.8–53.7)

Pregnancy (parity), n

 No

44

 Yes

56

Family history, n

 No

44

 Yes

46

 Missing

10

Race, n

 African American

5

 Hispanic

9

 White

86

Alcohol consumption - drinks per week, n

 Not current drinker

28

 <7

64

 7–14

5

 15–21

2