Demographic characteristics of Delphi participants.
| Variables | Round 1, n (%) | Round 2, n (%) | Round 3, n (%) |
|---|---|---|---|
| n | 426 | 177 | 119 |
| Missing data | 83 (19.5) | 0 (0.0) | 0 (0.0) |
| Groups | |||
| Patients with OA | 217 (50.9) | 67 (37.9) | 42 (35.3) |
| Health professionals | 65 (15.3) | 39 (22.0) | 29 (24.4) |
| Researchers | 131 (30.8) | 65 (36.7) | 42 (35.3) |
| Industry | 13 (3.0) | 6 (3.4) | 6 (5.0) |
| Sex | |||
| Male | 133 (38.8) | 65 (36.7) | 46 (38.7) |
| Female | 210 (61.2) | 112 (63.3) | 73 (61.3) |
| Joint affected by OA | |||
| Knee | 78 (22.7) | 37 (20.9) | 22 (18.5) |
| Hip | 24 (7.0) | 15 (8.5) | 10 (8.4) |
| Hip and knee | 73 (21.3) | 36 (20.3) | 25 (21.0) |
| Not declared | 42 (12.2) | 0 (0.0) | 0 (0.0) |
| Not affected by OA | 126 (36.7) | 89 (22.3) | 62 (52.1) |
| Health professional background | |||
| Physiotherapist | 61 (36.9) | 36 (38.7) | 27 (41.5) |
| Rheumatologist | 42 (27.3) | 29 (31.2) | 21 (32.3) |
| Health professional not listed | 19 (12.3) | 9 (9.7) | 5 (7.7) |
| Clinical biomedical scientist | 6 (3.9) | 3 (3.2) | 3 (4.6) |
| Orthopedic surgeon | 8 (5.2) | 3 (3.2) | 2 (3.1) |
| GP | 6 (3.9) | 3 (3.2) | 1 (1.5) |
| Occupational therapist | 3 (1.9) | 2 (2.2) | 0 (0.0) |
| Holistic therapist | 1 (0.6) | 0 (0.0) | 0 (0.0) |
| Clinical psychologist | 2 (1.3) | 2 (2.2) | 1 (1.5) |
| Nurse | 4 (2.6) | 4 (4.3) | 3 (4.6) |
| Chiropractor | 2 (1.3) | 2 (2.2) | 2 (3.1) |
| Country of response | |||
| Total no. countries represented | 25 | 20 | 17 |
| UK | 126 (36.7) | 60 (33.9) | 35 (29.4) |
| Canada | 38 (11.1) | 21 (11.9) | 14 (11.8) |
| USA | 36 (10.5) | 17 (9.6) | 13 (10.9) |
| Australia | 91 (22.8) | 48 (27.1) | 36 (30.3) |
| Spain | 6 (1.5) | 3 (1.7) | 2 (1.7) |
| Switzerland | 1 (0.3) | 0 (0.0) | 0 (0.0) |
| Denmark | 7 (1.8) | 5 (2.8) | 3 (2.5) |
| The Netherlands | 7 (1.8) | 5 (2.8) | 2 (1.7) |
| Brazil | 1 (0.3) | 0 (0.0) | 0 (0.0) |
| Germany | 5 (1.3) | 2 (1.1) | 2 (1.7) |
| China | 1 (0.3) | 0 (0.0) | 0 (0.0) |
| New Zealand | 1 (0.3) | 0 (0.0) | 0 (0.0) |
| Belgium | 2 (0.5) | 1 (0.3) | 1 (0.8) |
| Iceland | 2 (0.5) | 1 (0.3) | 1 (0.8) |
| Norway | 3 (0.8) | 2 (1.1) | 1 (0.8) |
| Japan | 1 (0.3) | 0 (0.0) | 0 (0.0) |
| Ireland | 3 (0.8) | 2 (1.1) | 0 (0.0) |
| Israel | 1 (0.3) | 0 (0.0) | 0 (0.0) |
| Italy | 2 (0.5) | 1 (0.6) | 1 (0.8) |
| Myanmar | 1 (0.3) | 1 (0.6) | 0 (0.0) |
| France | 2 (0.5) | 2 (1.1) | 2 (1.7) |
| India | 1 (0.3) | 1 (0.6) | 1 (0.8) |
| Sweden | 3 (0.8) | 3 (1.7) | 3 (2.5) |
| Russia | 3 (0.8) | 1 (0.6) | 1 (0.8) |
| Singapore | 1 (0.3) | 1 (0.6) | 1 (0.8) |
GP: general practitioner; OA: osteoarthritis.