Table 9 Cutoff values of risk factors for patients requiring postoperative clinical treatment
From: The role of routine laboratory tests after unilateral total knee arthroplasty
Treatment | Risk factors | Cut-off value | Sensitivity | Specificity | Auc | P value |
|---|---|---|---|---|---|---|
Transfusion | Age | 69.5 | 87.9% | 61.3% | 0.767 | < 0.001 |
Estimated blood loss | 225 | 77.6% | 75.7% | 0.839 | < 0.001 | |
Preoperative hb level | 111.5 | 91.9% | 86.2% | 0.933 | < 0.001 | |
Albumin | Estimated blood loss | 225 | 77.6% | 75.7% | 0.839 | < 0.001 |
Operative time | 152.5 | 63.8% | 69.6% | 0.696 | < 0.001 | |
preoperative Albumin | 42.85 | 43.8% | 74.1% | 0.592 | 0.02 | |
Potassium | BMI | 21.89 | 73.9% | 83.3% | 0.793 | 0.04 |
Preoperative potassium | 3.68 | 93.8% | 75% | 0.912 | 0.028 |