Univariate analysis for poor outcome (poor function or osteomyelitis) in 213 patients with septic arthritis
| Risk | Number | Morbidity (total=76) | Morbidity % (36%) | Odds | 95% CI | Significant |
|---|---|---|---|---|---|---|
| Confusion at presentation | 15 | 4 | 27% | 0.64 | 0.20, 2.07 | |
| Arthroscopy | 30 | 16 | 53% | 2.34 | 1.07, 5.12 | * |
| Female sex | 93 | 31 | 33% | 0.83 | 0.47, 1.47 | |
| Oral corticosteroids | 20 | 9 | 45% | 1.54 | 0.61, 3.90 | |
| Closed drainage | 131 | 76 | 58% | 0.56 | 0.32, 1.00 | * |
| Delay > 3 days | 99 | 43 | 43% | 1.88 | 1.07, 3.32 | * |
| Diabetes mellitus | 14 | 8 | 57% | 2.57 | 0.86, 7.70 | |
| Open drainage | 120 | 52 | 43% | 2.20 | 1.22, 3.96 | * |
| Prosthesis | 22 | 15 | 68% | 4.57 | 1.77, 11.78 | * |
| Age (y) | 90 | 35 | 39% | |||
| 15–64 | ||||||
| ⩽4 | 30 | 2 | 7% | 0.11 | 0.02, 0.53 | * |
| 5–14 | 25 | 6 | 24% | 0.50 | 0.16, 1.49 | |
| ⩾65 | 68 | 33 | 49% | 1.48 | 0.75, 2.95 | |
| Joint (hip) | 33 | 9 | 27% | |||
| Knee | 62 | 22 | 35% | 1.47 | 0.53, 4.11 | |
| Shoulder | 13 | 7 | 54% | 3.11 | 0.68, 14.66 | |
| Elbow | 21 | 5 | 24% | 0.83 | 0.20, 3.45 | |
| Other | 56 | 22 | 39% | 1.73 | 0.62, 4.89 | |
| Multiple | 28 | 11 | 39% | 1.73 | 0.52, 5.83 | |
| Organism (nil) | 41 | 12 | 29% | |||
| S aureus | 91 | 42 | 46% | 2.07 | 0.88, 4.93 | |
| Streptococci | 33 | 6 | 18% | 0.54 | 0.15, 1.84 | |
| Other gram positive | 6 | 3 | 50% | 2.42 | 0.32, 18.31 | |
| Gram negative | 27 | 12 | 44% | 1.93 | 0.62, 6.05 | |
| H influenzae | 15 | 1 | 7% | 0.17 | 0.01, 1.53 |