Table 1 Demographic characteristics
Demographic baseline characteristics | |
|---|---|
Parameter | N = 1241 |
Sex, n (%) | |
Male | 399 (32.2) |
Female | 842 (67.8) |
Age (years) | |
Mean (SD) | 64.6 (6.6) |
Median (min, max) | 64.5 (50.4–80.4) |
Race, n (%) | |
Caucasian | 1110 (89.4) |
Asian | 130 (10.5) |
Other | 1 (0.1) |
BMI, kg/m2 | |
Mean (SD) | 28.9 (4.7) |
WOMAC pain (0–100), target knee (SD) | 47.5 (14.6) |
WOMAC pain (0–100), non-target knee (SD) | 35.7 (22.3) |
Knee OA, n (%) | |
Unilateral, early | 44 (3.5) |
KL 0/2 | 44 (3.5) |
KL 0/1 | 0 (0) |
Unilateral, late | 1 (< 0.1) |
KL 0/3 | 1 (< 0.1) |
KL 0/4 | 0 (0) |
Bilateral, early | 851 (68.6) |
KL 1/2 | 221 (17.8) |
KL 2/2 | 630 (50.8) |
Bilateral, early/late | 250 (20.1) |
KL 1/3 | 20 (1.6) |
KL 1/4 | 0 (0) |
KL 2/3 | 212 (17.1) |
KL 2/4 | 18 (1.5) |
Bilateral late/late | 95 (7.7) |
KL 3/3 | 80 (6.4) |
KL 3/4 | 15 (1.2) |
KL 4/4 | 0 (0) |