Table 1 Main baseline characteristics of the two groups of patients.
| Variables | Patients included in the analysis | Patients with all variables recorded and all biological markers measured | Patients with missing data |
|---|---|---|---|
| (n = 445) | (n = 333) | (n = 112) | |
| Demographic data | |||
| Age (years) | 62.3 (6.9) | 62.1 (6.9) | 62.8 (6.9) |
| Sex (% female) | 59 | 59 | 59 |
| BMI (kg/m2) | 25.8 (3.5) | 25.7 (3.5) | 26.2 (3.6) |
| Disease duration (years) | 4.4 (4.7) | 4.4 (4.6) | 4.7 (5.0) |
| Symptoms | |||
| Pain on movement (VAS) | 45.3 (20.0) | 44.0 (19.5) | 49.4 (20.8) |
| Total Lequesne's index | 7.8 (2.6) | 7.6 (2.4) | 8.6 (2.9) |
| Functional impairment | 2.3 (1.2) | 2.3 (1.2) | 2.6 (1.3) |
| Night pain and/or morning stiffness (%) | 91 | 89 | 95 |
| Radiography | |||
| Femoral head migration (%) | |||
| Superolateral | 60 | 60 | 60 |
| Superomedial | 31 | 31 | 30 |
| Concentric | 9 | 9 | 10 |
| Joint space width (mm) | 2.3 (0.8) | 2.3 (0.9) | 2.3 (0.8) |
| Treatment | |||
| Placebo/diacerein (No of patients) | 227/218 | 176/157 | 51/61 |
Results are shown as mean (SD) unless stated otherwise.
BMI, body mass index.