Table 1.
Descriptive Statistics.
| Variable | Number | *IQR/Percentage |
|---|---|---|
| Demographics | ||
| Median age | 62 | 17.75 |
| Female | 32 | 34.0 |
| Male | 62 | 66.0 |
| Fever on arrival | 70 | 74.5 |
| Frankel grade not E | 41 | 43.6 |
| Radiculopathy | 38 | 40.4 |
| Paralysis | 8 | 8.5 |
| Laboratory values | ||
| Median white cell count | 12.45 | 6.6 |
| Median haemoglobin | 121 | 24.5 |
| Median CRP day 0 | 170 | 175 |
| Median CRP day 4/5 | 120 | 102 |
| Median albumin | 29.5 | 8.8 |
| Positive blood culture | 69 | 73.4 |
| Staphylococcus aureus isolated | 52 | 55.3 |
| Comorbidity | ||
| Multifocal sepsis | 54 | 57.4 |
| Endocarditis | 4 | 4.3 |
| Median charlson comorbidity index | 3 | 4 |
| Median ASA* | 3 | 3.2 |
| Diabetes | 15 | 16.0 |
| Immunosuppression | 11 | 11.7 |
| IVDU* | 9 | 9.6 |
| Liver disease | 14 | 14.9 |
| Renal disease | 15 | 16.0 |
| Median BMI | 29 | 9.5 |
| Median pre-treatment Karnofsky Performance score | 90 | 30 |
| Abscess location | ||
| Cervical | 20 | 21.3 |
| Thoracic | 35 | 37.2 |
| Lumbosacral | 42 | 44.7 |
| Multilevel disease | 24 | 25.5 |
| Bony involvement | 55 | 58.5 |
| Treatment type | ||
| Non-operative | 35 | 37.2 |
| Operative (including converted) | 59 | 62.8 |
| Converted to operative management | 21 | 22.3 |
| CT-Guided Drainage | 9 | 9.6 |
| Outcomes | ||
| Median length of stay | 17.5 | 21.3 |
| Median post-treatment Karnofsky score | 80 | 30 |
| Mortality within 30 days | 10 | 10.6 |
| Mortality within 2 years | 18 | 19.1 |
Legend: IQR = Interquartile range, ASA=American Society of Anaesthesiologists, IVDU= Intravenous Drug Use, CT= Computed Tomography.