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. 2021 Aug 11;21:460. doi: 10.1186/s12877-021-02391-8

Table 3.

CA and biological age estimated by three algorithms

CA BA BAE BAEC
Mean SD Min Max Mean SD Min Max Mean SD Min Max Mean SD Min Max
Total 55.50 15.04 20.00 90.00 53.76 21.15 −5.31 132.97 44.39 26.40 −66.21 202.17 48.03 21.84 −44.94 178.58
CA of 20–39 years 32.38 5.14 20.00 39.00 24.38 9.36 −5.31 76.49 26.39 19.92 −64.43 145.85 28.24 15.75 −44.94 124.70
CA of 40–59 years 50.00 5.63 40.00 59.00 46.31 10.78 11.64 96.54 41.09 23.84 −66.21 165.13 44.08 18.40 −43.60 143.33
CA of 60–74 years 66.46 4.16 60.00 74.00 68.00 10.32 37.62 118.56 52.78 25.72 −40.22 202.09 57.23 19.34 −20.19 174.76
CA ≥75 years 79.55 3.76 75.00 90.00 85.20 11.55 47.63 132.97 59.91 27.60 −3.65 202.17 66.31 20.25 22.44 178.58

Abbreviations: CA chronological age, BA biological age by principal component analysis method, BAE biological age by the Klemera and Doubal’s method without adjustment for chronological age, BAEC biological age by the Klemera and Doubal’s method with adjustment for chronological age, SD standard deviation