Table 6 ESR in patients with confirmed PJI compared with those undergoing arTJA. AUC = area under curve; PPV = positive predictive value; NPV = negative predictive value
Cut-off value (mm/h) | AUC | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | |
|---|---|---|---|---|---|---|
Total | 29 | 0.891 | 75.1 | 90.8 | 79.1 | 88.7 |
Gender | ||||||
Males | 25 | 0.891 | 78.7 | 89 | 83.7 | 85.3 |
Females | 29 | 0.901 | 76.8 | 90.1 | 74.1 | 91.4 |
Joint | ||||||
Knee | 29 | 0.915 | 80.6 | 92 | 85.3 | 89.2 |
Hip | 25 | 0.874 | 78 | 84.3 | 66.9 | 90.3 |
Prosthesis fixation | ||||||
Loosened | 28 | 0.885 | 76.7 | 89.4 | 78.2 | 88.6 |
Well-fixed | 29 | 0.904 | 75 | 89.7 | 92.9 | 89.7 |
ICM 2018 criteria | ||||||
Fistula | 21 | 0.922 | 87.2 | 82.2 | 41.2 | 97.8 |
Lack of fistula | 29 | 0.878 | 73.9 | 90.8 | 72 | 91.6 |
Major criteria | 24 | 0.883 | 78.9 | 84.6 | 65.4 | 91.6 |
Minor criteria | 30 | 0.926 | 84.7 | 90.9 | 46.9 | 98.4 |
BMI | ||||||
<25 kg/m2 | 25 | 0.915 | 85 | 88.6 | 76.4 | 93.1 |
≥25 kg/m2 | 29 | 0.879 | 73 | 90.6 | 78.6 | 87.6 |
<30 kg/m2 | 24 | 0.895 | 81.7 | 86.3 | 71.5 | 91.8 |
≥30 kg/m2 | 30 | 0.874 | 74.4 | 89.7 | 79.4 | 86.8 |
<35 kg/m2 | 25 | 0.89 | 79.9 | 85.5 | 71.2 | 90.5 |
≥35 kg/m2 | 30 | 0.854 | 76.8 | 91.2 | 84.1 | 86.6 |
Virulence of the bacteria | ||||||
Low-virulence | 24 | 0.863 | 76.1 | 84.6 | 47.4 | 95.1 |
High-virulence | 29 | 0.916 | 83.3 | 90.8 | 64.8 | 96.4 |