Table 2. Summary statistics of different biomarkers of aging in 1,070 visits among 696 elderly white men from the Normative Aging Study, 1999-2013.
| Variables | mean ± SD | Percentile | ||
| 5th | 50th | 95th | ||
| Epigenetic BoA | ||||
| GrimAgeAccel (years) | 0.01 ± 4.07 | -5.52 | -0.63 | 7.82 |
| PhenoAgeAccel (years) | -0.17 ± 5.99 | -9.31 | -0.56 | 10.09 |
| IEAA (years) | -0.16 ± 5.08 | -7.87 | -0.62 | 8.26 |
| EEAA (years) | -0.10 ± 5.81 | -9.41 | -0.24 | 9.61 |
| Zhang’s DNAmRiskScore | -1.87 ± 0.44 | -2.54 | -1.90 | -1.07 |
| Non-epigenetic BoA | ||||
| TL | 1.25 ± 0.49 | 0.58 | 1.19 | 2.15 |
| mtDNA-CN | 1.03 ± 0.22 | 0.73 | 1.01 | 1.38 |
Abbreviations: SD = standard deviation; IEAA = intrinsic epigenetic age acceleration; EEAA = extrinsic epigenetic age acceleration; TL = Telomere length; mtDNA-CN = mitochondrial DNA copy number.