Table 4 Patient characteristics of participants and non-participants
From: Knee disorders in primary care: design and patient selection of the HONEUR knee cohort
| Â | all participants in cohort | participants in sample | non-participants in sample | comparison# of participation rates | |||
|---|---|---|---|---|---|---|---|
| Â | N | n (%) | N | n (%) | N | n (%) | OR (95% CI) |
gender (n women ) | 1045 | 494 (47%) | 130 | 64 (49%) | 180 | 83 (46%) | 1.20 (0.78–1.85) |
age (n >35 years ) | 1045 | 741 (71%) | 130 | 94 (72%) | 180 | 109 (61%) | 1.79 (1.12–2.86)* |
   in men | 551 | 380 (69%) | 66 | 46 (69%) | 97 | 50 (52%) | 2.08 (1.11–3.93)* |
   in women | 494 | 361 (73%) | 64 | 48 (78%) | 83 | 59 (71%) | 1.41 (0.69–2.90) |
   in traumatic | 197 | 134 (68%) | 16 | 11 (73%) | 34 | 17 (50%) | 2.60 (0.80–8.98) |
   in non-traumatic | 848 | 607 (72%) | 114 | 83 (73%) | 146 | 92 (63%) | 1.63 (0.98–2.72) |
   trauma $ (n positive ) | 1045 | 197 (19%) | 130 | 16 (12%) | 180 | 34 (19%) | 0.59 (0.32–1.09) |
   in men | 551 | 109 (20%) | 66 | 9 (14%) | 97 | 20 (21%) | 0.60 (0.26–1.38) |
   in women | 494 | 88 (18%) | 64 | 7 (11%) | 83 | 14 (17%) | 0.58 (0.23–1.47) |
ICPC codes | Â | Â | Â | Â | Â | Â | Â |
L15: unspecified | Â | 519 (51%) | Â | 69 (53%) | Â | 82 (46%) | Â |
L78: acute distortion | Â | 107 (10%) | Â | 7 (5%) | Â | 20 (11%) | Â |
L90: osteoarthritis | Â | 77 (7%) | Â | 9 (7%) | Â | 28 (16%) | Â |
L94.2: Osgood-Schlatter | Â | 10 (1%) | Â | 1 (1%) | Â | 0 0% | Â |
L96: acute meniscus/ligament ruptures | Â | 87 (8%) | Â | 12 (9%) | Â | 14 (8%) | Â |
L97: chronic internal trauma | Â | 245 (23%) | Â | 32 (25%) | Â | 36 (20%) | Â |