Skip to main content
. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Arch Gerontol Geriatr. 2008 May 29;49(1):22–26. doi: 10.1016/j.archger.2008.04.006

Table 1.

Biological aging (frailty) index definition

Add 1 to the index for any of the following:

  • ▪ Poor vision measure

    • ▪ Best corrected VA 20/40 or worse in better eye, or

    • ▪ Contrast Sensitivity ≤ 1.35 log triplet score in better eye, or

    • ▪ Difference of 15 or more letters between eyes for best-corrected VA

  • ▪ Inability to rise from a chair without using arms

  • ▪ Highest quartile for gait time

    • ▪ ≥ 3.37 sec females; ≥ 3.19 sec males

  • ▪ Lowest quartile for hand grip strength

    • ▪ ≤ 18.5 kg females; ≤ 34.5 kg males

  • ▪ Lowest quartile for PEFR

    • ▪ ≤ 290 l/min females; ≤ 440 l/min males