Table 5 Associations with (i) the term 'osteoarthritis' (group 1 definition) (ii) the terms 'osteoarthritis' and 'degenerative joint disease' (group 2 definition) and (iii) the terms 'osteoarthritis', 'degenerative joint disease' and any descriptive radiological feature of knee osteoarthritis (group 3 definition), from Radiologists' reports, summarised by the odds ratio (95% confidence interval)
From: A cross sectional study of requests for knee radiographs from primary care
n = 136 | Total | Group 1 Definition | Group 2 Definition | Group 3 Definition | |||
|---|---|---|---|---|---|---|---|
| Â | Â | n (%) | ORa (95% CI) | n (%) | ORa (95% CI) | n (%) | ORa (95% CI) |
Male | 62 | 16 (26%) | 1.00 | 33 (53%) | 1.00 | 43 (69%) | 1.00 |
Female | 74 | 14 (19%) | 0.55 (0.22, 1.40) | 27 (36%) | 0.48 (0.24, 0.99) | 42 (57%) | 0.56 (0.27, 1.17) |
Age under 60 | 69 | 13 (19%) | 1.00 | 24 (35%) | 1.00 | 37 (54%) | 1.00 |
60 & over | 67 | 17 (25%) | 1.40 (0.55, 3.56) | 36 (54%) | 2.05 (1.00, 4.23) | 48 (72%) | 2.13 (1.01, 4.49) |
Radiologists | Â | Â | Â | Â | Â | Â | Â |
Others | 57 | 7 (12%) | 1.00 | 21 (37%) | 1.00 | 38 (67%) | 1.00 |
Code 7 | 40 | 20 (50%) | 7.54 (2.69, 21.17) | 21 (53%) | 1.96 (0.83, 4.61) | 28 (70%) | 1.17 (0.48, 2.86) |
Code 8 | 39 | 3 (8%) | 0.62 (0.15, 2.59) | 18 (46%) | 1.60 (0.67, 3.81) | 19 (49%) | 0.46 (0.19, 1.09) |
GP diagnosis/possible diagnosis of OA | Â | Â | Â | Â | Â | Â | Â |
No | 86 | 15 (17%) | 1.00 | 34 (40%) | 1.00 | 52 (60%) | 1.00 |
Yes | 50 | 15 (30%) | 1.95 (0,76, 5.00) | 26 (52%) | 1.60 (0.75, 3.40) | 33 (66%) | 1.05 (0.48, 2.29) |