Table 1 Characteristics of the study population
Variable | Missing values | Hip OA n = 478 | Knee OA n = 932 | |
|---|---|---|---|---|
Demographics | Age (years), mean | 0 | 64 (63; 65) | 65 (64; 65) |
Female | 0 | 63 (58; 67) | 68 (66; 70) | |
BMI | 29 | 28 (27; 28) | 29 (29; 30) | |
Burden of OA | Symptom duration (years), mean | 72 | 14 (12; 15) | 15 (14; 16) |
Deterioration of symptoms (during last 2 years) | 21 | 62 (56; 68) | 57 (53; 61) | |
WOMAC | WOMAC total, mean | 202 | 42 (39; 44) | 41 (39; 42) |
WOMAC pain, mean | 131 | 42 (40; 45) | 42 (40; 43) | |
WOMAC function, mean | 89 | 41 (38; 43) | 39 (38; 41) | |
WOMAC stiffness, mean | 89 | 45 (42; 48) | 45 (43; 47) | |
Any impact on personal situation | 27 | 78 (73; 83) | 77 (74; 81) | |
WHO-5 | 61 | 50 (47; 53) | 51 (49; 53) | |
Treating specialist | Orthopaedist is treating | 12 | 63 (57; 69) | 71 (68; 75) |
Diagnostics | X-Ray of the corresponding joint | 15 | 92 (89; 95) | 91 (89; 93) |
MRI of the corresponding joint | 49 | 42 (36; 48) | 55 (51; 59) | |
Treatment | No prescription of analgesicsa | 0 | 42 (36; 48) | 34 (31; 38) |
NSAR prescriptiona | 0 | 44 (38; 50) | 51 (47; 55) | |
Opioid prescriptiona | 0 | 13 (9; 18) | 13 (10; 16) | |
Other analgetic prescriptiona | 0 | 25 (20; 30) | 29 (26; 33) | |
Daily use of medication | 20 | 26 (21; 31) | 22 (19; 25) | |
Occasional use of medication | 20 | 46 (40; 52) | 51 (47; 55) | |
Physical therapy prescriptiona | 0 | 46 (40; 52) | 49 (45; 53) | |
Having at least one artificial joint | 52 | 23 (18; 28) | 19 (16; 22) | |