Table 2 Lab tests and culture results among patients with and without inflammatory diseases at spacer insertion
|  | Non-inflammatory diseases(n = 159) | Inflammatory diseases(n = 25) | P-value |
|---|---|---|---|
Serum biomarkers, mean (SD) | |||
 CRP (mg/l) | 29.9 (33.4) | 23.3 (22.4) | 0.552 |
 IL-6 (pg/ml) | 30.03 (97.49) | 22.54 (34.22) | 0.991 |
 ESR, (mm/h) | 44.34 (26.76) | 38.27 (22.14) | 0.370 |
 Fibrinogen, (g/l) | 5.05 (1.30) | 4.83 (1.12) | 0.164 |
 D-dimer, (g/ml) | 1.92 (1.44) | 1.23 (0.64) | 0.106 |
Mean Synovial WBC, 109/ml (SD) | 23,994.78 (30,090.00) | 20,571.67 (34,426.31) | 0.406 |
Microbiology results, n (%) | |||
 Staphylococcus aureus | 33 (20.75) | 3 (12.00) | 0.286 |
 Coagulase negative Staphylococcus | 42 (26.42) | 5 (20.00) | 0.373 |
 Enterococcus faecalis | 9 (5.66) | 1 (4.00) | 1.000 |
 Streptococcus | 5 (3.14) | 1 (4.00) | 0.577 |
 Gram negative bacillus | 12 (7.55) | 2 (8.00) | 1.000 |
 Fungus | 11 (6.92) | 0 (0.00) | 0.364 |
 Polymicrobial organisms | 12 (7.55) | 2 (8.00) | 1.000 |
 Other organisms | 5 (3.14) | 0 (0.00) | 1.000 |
Positive pathology *, n (%) | 100 (62.77) | 18 (73.68) | 0.753 |
Sinus tract, n (%) | 43 (27.22) | 7 (28.00) | 1.000 |