Baseline characteristics of study population (demographics, symptoms, functional impairment, and prevalence of radiographic osteoarthritis)
| Total | Hip OA | Knee OA | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Men | Women | Total | Men | Women | Total | ||||
| Number of participants | 809 | 199 | 221 | 420 | 106 | 283 | 389 | ||
| Mean (SD) age (y) | 63.3 (8.8) | 58.8 (9.5) | 62.0 (9.5) | 60.5 (9.7) | 63.9 (8.2) | 67.1 (5.4) | 66.3 (6.4) | ||
| Mean (SD) body weight (kg) | 78.8 (13.5) | 83.6 (12.8) | 71.9 (12.9) | 77.4 (14.1) | 86.5 (12.4) | 78.1 (12.1) | 80.4 (12.7) | ||
| Mean (SD) body mass index (kg/m2) | 28.3 ( 4.3) | 27.6 (3.8) | 27.0 (4.4) | 27.3 (4.1) | 28.9 (3.4) | 29.6 (4.4) | 29.4 (4.2) | ||
| Mean (SD) intensity of pain (VAS)1-150 | 71.6 (17.1) | 66.4 (19.1) | 73.0 (16.2) | 69.9 (17.9) | 70.0 (14.3) | 74.7 (16.4) | 73.4 (16.0) | ||
| Mean (SD) Lequesne index (% of max.)† | 55.6 (13.7) | 50.6 (15.1) | 55.6 (11.7) | 53.2 (13.6) | 51.1 (11.3) | 60.7 (13.2) | 58.1 (13.4) | ||
| Median (25th–75th percentile)symptom duration (y)1-150 | 6.5 (3–13) | 5 (2–10) | 5 (2–10) | 5 (2–10) | 8 (4–15) | 10 (4–15) | 10 (4–15) | ||
| Number (%) with unilateral OA | 114 (15.5) | 32 (16.8) | 40 (19.0) | 72 (17.9) | 19 (21.8) | 23 (9.3) | 42 (12.6) | ||
| Number (%) with bilateral OA | 622 (84.5) | 159 (83.2) | 171 (81.0) | 330 (82.1) | 68 (78.2) | 224 (90.7) | 292 (87.4) | ||
| Number (%) with 2+DIP- or PIP-OA1-152 | 424 (66.4) | 88 (56.1) | 110 (62.9) | 198 (59.6) | 53 (62.4) | 173 (77.9) | 226 (73.6) | ||
| Number (%) with CMC-OA§ | 184 (28.8) | 23 (14.6) | 46 (26.3) | 69 (20.8) | 19 (22.4) | 96 (43.2) | 115 (37.5) | ||
| Number (%) with generalised OA¶ | 171 (26.8) | 22 (14.0) | 42 (24.0) | 64 (19.3) | 17 (20.0) | 90 (40.5) | 107 (34.9) | ||
↵1-150 Pain of ipsilateral, surgically treated joint preoperatively.†Functional impairment by ipsilateral, surgically treated joint preoperatively.
↵1-152 DIP = distal interphalangeal joint, PIP = proximal interphalangeal joint. §CMC = carpometacarpal. ¶Defined as osteoarthritis in two or more DIP or PIP joints and one or more CMC joint.