Table 1.
Baseline characteristics of the CHECK study population at baseline
| Characteristics | Participants (n = 1002) |
Knee complaintsa (n = 829) |
Hip complaintsb (n = 588) |
|---|---|---|---|
| Women, % | 79.0 | 79.6 | 80.8 |
| Age in years (SD) | 55.9 (5.2) | 56.0 (5.1) | 55.8 (5.3) |
| BMI (SD) | 26.2 (4.1) | 26.4 (4.1) | 26.1 (4.1) |
| WOMAC pain (SD) | 25.4 (17.2) | 25.6 (17.3) | 27.2 (17.1) |
| WOMAC function | 23.5 (17.1) | 24 (17.3) | 25.3 (17.6) |
| WOMAC stiffness | 33.2 (21.1) | 33.8 (21.1) | 34.8 (21.2) |
| NRS (0–10) (SD) | 3.6 (2.1) | 3.6 (2.1) | 3.7 (2.1) |
| Hip pain, % | 58.7 | 50.1 | 100.0 |
| Knee pain, % | 83.0 | 100.0 | 71.1 |
| ACR clinical knee OA, (%) | 674 (81.3) | ||
| ACR combined knee OA (%) | 606 (73.1) | ||
| Clinical/combined knee OA (%) | 760 (91.7) | ||
| ACR clinical hip OA (%) | 162 (27.6) | ||
| ACR combined hip OA (%) | 322 (54.7) | ||
| Clinical or combined hip OA (%) | 370 (62.9) |
SD standard deviation, NRS numeric rating scale (0–10), BMI body mass index, WOMAC Western Ontario and McMaster Universities Osteoarthritis Index scores (0–100), ACR American College of Rheumatology, OA osteoarthritis
aParticipant with either knee, or knee and hip pain
bParticipant with either hip, or hip and knee pain