Table 2.
Comparisons of preoperative blood biomarkers between cases and controls
| Cases with PJI (n = 39) | Controls without PJI (n = 33) | P value | |
|---|---|---|---|
| Total bilirubin (μmol/L) | 10.84 ± 0.61 | 14.68 ± 0.75 | < 0.001 |
| Direct bilirubin (μmol/L) | 3.07 ± 0.19 | 4.70 ± 0.39 | < 0.001 |
| ALT (U/L) | 20.54 ± 1.97 | 20.53 ± 2.97 | 0.997 |
| AST (U/L) | 19.65 ± 1.90 | 19.27 ± 2.45 | 0.902 |
| ALP (U/L) | 78.67 ± 5.13 | 79.38 ± 8.82 | 0.943 |
| GGT (U/L) | 32.42 ± 3.36 | 37.07 ± 11.39 | 0.672 |
| Creatinine (μmol/L) | 65.69 ± 2.75 | 64.23 ± 2.04 | 0.682 |
| Serum glucose (mmol/L) | 5.23 ± 0.27 | 5.26 ± 0.24 | 0.931 |
| Serum sodium (mmol/L) | 141.10 ± 0.46 | 142.90 ± 0.55 | 0.156 |
| Serum potassium (mmol/L) | 3.84 ± 0.05 | 3.92 ± 0.07 | 0.361 |
| Hemoglobin (g/L) | 136.20 ± 1.72 | 140.70 ± 2.84 | 0.157 |
| RBC count (1012/L) | 4.47 ± 0.05 | 4.54 ± 0.09 | 0.501 |
| WBC count (109/L) | 6.04 ± 0.27 | 6.18 ± 0.35 | 0.731 |
| Blood platelet count (109/L) | 210.50 ± 8.85 | 207.50 ± 7.81 | 0.805 |
| CRP (mg/L) | 0.43 ± 0.07 | 0.49 ± 0.09 | 0.557 |
| IL-6 (pg/ml) | 6.59 ± 2.44 | 4.88 ± 1.08 | 0.712 |
| ESR (mm/h) | 10.27 ± 1.16 | 10.78 ± 1.34 | 0.773 |
| APTT (S) | 35.80 ± 0.79 | 35.47 ± 1.44 | 0.834 |
| Fibrinogen (g/L) | 3.24 ± 0.16 | 3.28 ± 0.18 | 0.861 |
| D-dimer (μg/Ml) | 0.71 ± 0.13 | 0.53 ± 0.11 | 0.543 |
ALT Alanine transaminase, AST Aspartate transaminase, ALP Alkaline phosphatase, GGT γ-glutamyl transferase, RBC Red blood cells, WBC White blood cells, CRP C-reactive protein, IL Interleukin, ESR Erythrocyte sedimentation rate, APTT Activated partial thromboplastin time