Table 1.
Comparison of baseline characteristic between patients with hip and knee osteoarthritis. Continuous variables were compared using rank sum test, while Fisher's exact test was used for categorical variables
| Baseline characteristic | Missing data n | Knee osteoarthritis n (%)/median (IQR) | Hip osteoarthritis n (%)/median (IQR) | P‐value |
|---|---|---|---|---|
| Total | 0 | 167 (100%) | 80 (100%) | — |
| Age (years) | 0 | 68.00 (60.00, 76.00) | 67.00 (59.00, 75.00) | 0.317 |
| Gender | 0 | — | — | 0.890 |
| Female | 0 | 100 (59.9) | 49 (61.3) | — |
| Male | 0 | 67 (40.1) | 31 (38.8) | — |
| BMI (kg/m2) | 7 | 31.32 (27.40, 36.00) | 27.54 (23.36, 31.97) | < 0.001 |
| K/L grading scale | 21 | — | — | 0.324 |
| Stage 1 | 0 | 5 (3.0) | 2 (2.5) | — |
| Stage 2 | 0 | 19 (11.4) | 9 (11.3) | — |
| Stage 3 | 0 | 59 (35.3) | 22 (27.5) | — |
| Stage 4 | 0 | 68 (40.7) | 45 (56.3) | — |
| Symptom duration (years) | 2 | 3.90 (2.00, 8.00) | 2.70 (1.60, 5.60) | 0.073 |
| Number of comorbid conditions | 0 | 2.00 (1.00, 3.00) | 2.00 (1.00, 3.00) | 0.977 |
| Comorbidities | ||||
| Hypertension | 0 | 96 (57.5) | 42 (52.5) | 0.495 |
| Osteoarthritis elsewhere | 0 | 93 (55.7) | 41 (51.2) | 0.585 |
| Diabetes | 0 | 39 (23.4) | 7 (8.7) | 0.005 |
| Ischaemic heart disease | 0 | 27 (16.2) | 7 (8.7) | 0.166 |
| Back pain | 0 | 15 (9.0) | 10 (12.5) | 0.249 |
| Baseline KOOS and HOOS scales | ||||
| QOL | 5 | 25.00 (12.50, 43.75) | 31.25 (12.50, 43.75) | 0.922 |
| Sport/ Recreation | 6 | 0.00 (0.00, 10.00) | 12.50 (3.13, 25.00) | < 0.001 |
| ADL | 4 | 42.65 (27.94, 58.82) | 38.24 (22.06, 57.35) | 0.226 |
| Symptom | 4 | 44.64 (32.14, 64.29) | 45.00 (31.25, 65.00) | 0.656 |
| Pain | 4 | 44.44 (30.56, 58.33) | 37.50 (25.00, 52.50) | 0.118 |
| Baseline MAPT | 33 | 22.78 (4.45, 52.53) | 39.91 (16.28, 83.57) | 0.002 |
ADL, adjusted daily living; BMI, body‐mass index; HOOS, hip injury and osteoarthritis outcome score (0 = worst, 100 = best); IQR, interquartiles range; K/L, Kellgren Lawrence radiological score; KOOS, knee injury and osteoarthritis outcome score (0=worst, 100=best); MAPT, multi‐attribute prioritization tool; N, number; QOL, quality of life.