Table 2 Chronological and personal biological age of the participants at baseline and re-examination, and their difference

Chronological age, years

n = 112

n = 112

 mean (SD) [range]

67.8 (2.5) [64–77]

87.6 (2.5) [84–96]

Personal biological age, years

n = 105

n = 111

 mean (SD) [range]

61.3 (11.5) [35.7–81.5]

77.1 (11.5) [36.3–94.7]

Difference of chronological and personal biological age, years

n = 105

n = 111

 mean (SD) [range]

6.44 (11.21) [−16.47–32.88]

10.48 (11.01) [−8.25–48.70]