Table 1.
Clinical characteristics of the patient cohorts
| Clinical characteristic | OAI n = 29 |
Non-OAI n = 24 |
P-value | ||
|---|---|---|---|---|---|
| Demography | |||||
| Age, median (IQR) | 67 | (49–81) | 80 | (65–89) | 0.06 |
| Male sex | 20 | (68%) | 8 | (33%) | 0.01 |
| Systemic comorbidity | |||||
| CCI, median (IQR) | 1 | (0–3) | 2 | (1–4) | 0.004 |
| Chronic organ failure | 10 | (34%) | 12 | (50%) | 0.28 |
| Diabetes | 4 | (14%) | 3 | (13%) | 1.0 |
| Active Malignancy | 3 | (10%) | 5 | (21%) | 0.44 |
| Immunosuppression | 3 | (10%) | 7 | (29%) | 0.16 |
| Local risk factors | |||||
| Orthopaedic implant | 9 | (31%) | 16 | (67%) | 0.01 |
| Pre-existing joint disease | 5 | (17%) | 10 | (42%) | 0.07 |
| Surgical proc. < 4 weeks | 7 | (24%) | 1 | (4%) | 0.06 |
| Previous septic arthritis | 8 | (28%) | 2 | (8%) | 0.09 |
OAI Osteoarticular infection, CCI Charlson comorbidity Index, IQR Inner quartile range; Surgical proc. < 4 weeks, invasive joint procedure performed within 4 weeks prior to admission. Chronic organ failures included any of cardiac, renal, respiratory and hepatic failures. All data presented as n (% of cases), except Age and CCI, presented as median (IQR). Significant P-values are highlighted in bold