Table 1.

Participant characteristics (n = 350)^*

Characteristic	Value
Age, years	65.3 ± 11.1
Female, %	71.7
Nonwhite, %	26.3
Bachelor’s degree or postgraduate work, %	59.4
KOOS pain subscale	62.0 ± 18.0
KOOS ADL subscale	66.8 ± 19.1
Years with arthritis symptom	13.1 ± 11.7
Depressive symptoms (PHQ-8)	3.8 ± 4.1
≥1 fall in the previous 12 months, %	34.1
History of knee injury, %	50.0
Family history of knee problems, %	65.1
Self-Efficacy for Exercise scale	56.3 ± 20.3
Unilateral stand time	7.3 ± 3.5

^*Values are the mean ± SD unless indicated otherwise.

Race information was missing for 12 participants, history of falls was missing for 1 participant, and family history of knee problems was missing for 3 participants. KOOS = Knee Injury and Osteoarthritis Outcome Score; ADL = activities of daily living; PHQ-8 = 8-item Patient Health Questionnaire.