Demographic and pre-total knee replacement (TKR) clinical information of the study subjects.
| No. subjects | 228 |
| Mean age at TKR, yrs (SD) | 67 (8) |
| % Female | 73 |
| % White | 85 |
| Pre-TKR BMI, kg/m2, mean (SD) | 33 (7) |
| Pre-TKR WOMAC-PF, mean (range) | 30 (15–63) |
| Time since pre-TKR visit to TKR, mos, mean (SD) | 16 (10) |
| Time since TKR to outcome assessment, mos, mean (SD) | 15 (9) |
| Percent at or above PASS for TKR function (pre-TKR) | 26 |
BMI: body mass index; WOMAC-PF: Western Ontario and McMaster Universities Osteoarthritis Index Physical Function subscale; PASS: Patient Acceptable Symptom State.