Characteristic | All patients | ||
---|---|---|---|
n* | %* | ||
Males | 37 | 61 | |
Median age, IQR | 65 | 51–76 | |
Median BMI, IQR | 25 | 21–28 | |
Arterial hypertension | 24 | 39 | |
Diabetes mellitus | 7 | 11 | |
Coronary heart disease | 15 | 25 | |
Renal impairment (clearance <80 ml/min.) | 5 | 8 | |
Fever (>38°C) | 17 | 28 | |
Back pain | 57 | 93 | |
Neurologic al deficits | 10 | 16 | |
Epidural abscess | 31 | 51 | |
Median leucocytes count, IQR (109/l) | 10.1 | 8.0–12.5 | |
Median C-reactive protein (mg/l) | 100 | 62–186 | |
Microorganism | Staphylococcus aureus | 11 | 21 |
Coagulase negative staphylococci | 9 | 17 | |
Streptococci spp. | 12 | 20 | |
Escherichia coli | 6 | 11 | |
Klebsiella spp. | 2 | 4 | |
Pseudomonas aeruginosa | 7 | 13 | |
Propionibacterium acnes | 3 | 6 | |
Other or unknown | 11 | 21 |