Table 1 Demographic and other baseline characteristics in the full analysis set
Characteristics | Knee joint N = 126 | Other joint N = 40 | Total N = 166 | |
|---|---|---|---|---|
Age (years), n (%) | Mean ± SD | 67.0 ± 10.2 | 62.1 ± 13.4 | 65.9 ± 11.2 |
< 65 | 51 (40.5) | 19 (47.5) | 70 (42.2) | |
≥65–75 | 45 (35.7) | 14 (35.0) | 59 (35.5) | |
> 75 | 30 (23.8) | 7 (17.5) | 37 (22.3) | |
Sex, n (%) | Male | 33 (26.2) | 17 (42.5) | 50 (30.1) |
Female | 93 (73.8) | 23 (57.5) | 116 (69.9) | |
BMI (kg/m2), n (%) | Mean ± SD | 26.06 ± 4.92 | 25.33 ± 4.49 | 25.88 ± 4.82 |
< 25.0 | 54 (42.9) | 20 (50.0) | 74 (44.6) | |
≥25.0 | 72 (57.1) | 20 (50.0) | 92 (55.4) | |
Duration of current joint pain (years), n (%) | Mean ± SD | 5.7 ± 6.4 | 4.1 ± 5.3 | 5.3 ± 6.2 |
< 1 | 31 (24.6) | 13 (32.5) | 44 (26.5) | |
≥1 | 95 (75.4) | 27 (67.5) | 122 (73.5) | |
Classification of OA, n (%) | Primary | 122 (96.8) | 30 (75.0) | 152 (91.6) |
Secondary | 4 (3.2) | 10 (25.0) | 14 (8.4) | |
Causea, n (%)b | Injury | 2 (50.0) | 1 (10.0) | 3 (21.4) |
Cuff tear | 2 (20.0) | 2 (14.3) | ||
Meniscus injury | 2 (50.0) | 2 (14.3) | ||
Acetabular dysplasia | 6 (60.0) | 6 (42.9) | ||
Other | 0 | 1 (10.0) | 1 (7.1) | |
Stage of OAc | ||||
Knee, shoulder and elbow OA, n (%) | Grade 1 | 18 (14.3) | 13 (32.5) | 31 (18.7) |
Grade 2 | 52 (41.3) | 5 (12.5) | 57 (34.3) | |
Grade 3 | 43 (34.1) | 4 (10.0) | 47 (28.3) | |
Grade 4 | 13 (10.3) | 1 (2.5) | 14 (8.4) | |
Hip OA, n (%) | Early stage | 5 (12.5) | 5 (3.0) | |
Advanced stage | 3 (7.5) | 3 (1.8) | ||
End stage | 1 (2.5) | 1 (0.6) | ||
Ankle OA, n (%) | Stage 1 | 3 (7.5) | 3 (1.8) | |
Stage 2 | 1 (2.5) | 1 (0.6) | ||
Stage 3 | 3 (7.5) | 3 (1.8) | ||
Stage 4 | 1 (2.5) | 1 (0.6) | ||
Joint pain scored, n (%) | Mean ± SD | 6.0 ± 1.1 | 5.7 ± 1.3 | 5.9 ± 1.2 |
< 5 | 15 (11.9) | 12 (30.0) | 27 (16.3) | |
≥5–7 | 71 (56.3) | 19 (47.5) | 90 (54.2) | |
≥7 | 40 (31.7) | 9 (22.5) | 49 (29.5) | |