Table 1.

Characteristics of participants overall and by KL groupings. Values are n/N (%) unless otherwise specified.

Participant CharacteristicsTotal Sample, n = 864KL ≥ 2 in at Least 1 Ankle, n = 56KL < 2 Both Ankles, n = 808
Age, yrs, mean (SD)71.6 (7.6)72.6 (7.3)71.1 (7.6)
BMI, kg/m2, mean (SD)30.8 (6.4)33.6 (6.69)30.6 (6.3)
Women589/864 (68.2)38/56 (66.1)551/808 (68.2)
African American289/864 (33.5)17/56 (30.4)272/808 (33.7)
History of ankle injury97/854 (11.4)11/56 (19.6)86/798 (10.8)
  Right ankle injury51/854 (6.0)7/56 (12.5)44/798 (5.5)
  Left ankle injury33/854 (3.9)1/56 (1.8)32/798 (4.0)
  Bilateral ankle injury13/854 (1.5)3/56 (5.4)10/798 (1.3)
Any ankle symptoms146/863 (16.9)19/56 (33.9)127/807 (15.7)
  Right ankle symptoms31/863 (3.6)2/56 (3.6)29/807 (3.6)
  Left ankle symptoms24/863 (2.8)6/56 (10.7)18/807 (2.2)
  Bilateral ankle symptoms91/863 (10.5)11/56 (19.6)80/807 (9.9)
  • KL: Kellgren-Lawrence arthritis grading scale; BMI: body mass index.