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Table 1 Characteristics of participants

From: Longitudinal study of leukocyte DNA methylation and biomarkers for cancer risk in older adults

ID Ancestry1 Sex1 Age1 Followup Year2 Cancer3 Time4
Per1 EA Male 75 6 no  
Per2 AA Male 71 6 yesp 7
Per3 AA Female 72 6 no  
Per4 EA Male 74 6 yesc 5
Per5 EA Female 76 6 no  
Per6 EA Male 75 6 yesp 4
Per7 AA Male 76 2 no  
Per8 AA Female 78 6 no  
Per9 EA Female 78 6 yesb 1
Per10 AA Male 74 6 yeso 10
Per11 AA Female 74 6 no  
Per12 AA Female 71 6 no  
Per13 EA Male 76 6 yesl 0.5
Per14 EA Male 75 na no  
Per15 EA Female 73 6 no  
Per16 EA Male 73 6 no  
Per17 AA Female 76 na no  
Per18 AA Female 78 6 yess 11
Per19 AA Female 72 6 (no baseline DNA) no  
Per20 EA Female 70 6 no  
  1. 1Self-reported race, sex, and age at baseline; EA = European Americans or Caucasians and AA = African Americans
  2. 2Year from baseline when second DNA sample was collected; two participants had no follow-up DNA and one participant had no baseline (visit year 1) DNA due to low DNA quality/quantity
  3. 3Cancer diagnosis during following years; all participants were considered free of diagnosed cancer at time of screening and recruitment; p = prostate, c = colon; b = breast; l = leukemia; s = stomach; o = other
  4. 4Time from baseline to cancer diagnosis in years