Table 4.
Predictive value of selected preoperative parameters in detection poorer outcomes in orthogeriatric patients
| Variable | ROC | Sensitivity,% | Specificity,% | PPV,% | NPV,% | Accuracy rate,% | P value |
|---|---|---|---|---|---|---|---|
| Post operative myocardial injury | |||||||
| NLR>5.1 | 0.738 | 86.7 | 38.5 | 23.8 | 92.9 | 47.2 | 0.000 |
| Albumin<33g/L | 0.774 | 72.4 | 67.2 | 33.1 | 91.5 | 68.1 | 0.000 |
| NLR>5.1+Albumin<33g/L | 0.774 | 64.0 | 75.4 | 36.6 | 90.4 | 73.4 | 0.000 |
| Post operative CRP>100 mg/L | |||||||
| NLR>5.1 | 0.659 | 80.0 | 46.3 | 58.2 | 71.2 | 62.6 | 0.000 |
| Albumin<33g/L | 0.708 | 58.7 | 76.6 | 70.2 | 66.4 | 68.0 | 0.000 |
| NLR>5.1+Albumin<33g/L | 0.711 | 50.5 | 85.0 | 75.9 | 64.8 | 68.4 | 0.000 |
| Post operative CRP>150 mg/L | |||||||
| NLR>5.1 | 0.664 | 85.3 | 42.1 | 40.0 | 86.3 | 55.6 | 0.000 |
| Albumin<33g/L | 0.678 | 62.3 | 69.5 | 48.2 | 80.2 | 67.2 | 0.000 |
| NLR>5.1+Albumin<33g/L | 0.680 | 54.3 | 77.9 | 52.6 | 79.0 | 70.5 | 0.000 |
| LOS>10 days | |||||||
| NLR>5.1 | 0.554 | 66.8 | 34.3 | 51.3 | 50.0 | 50.8 | 0.806 |
| Albumin<33g/L | 0.611 | 49.5 | 69.3 | 62.5 | 57.0 | 59.2 | 0.000 |
| NLR>5.1+Albumin<33g/L | 0.592 | 38.4 | 74.5 | 60.9 | 53.9 | 56.1 | 0.005 |
| In-hospital death | |||||||
| NLR>8.5 | 0.847 | 90.0 | 68.6 | 6.6 | 99.6 | 69.1 | 0.000 |
| Albumin<33g/L | 0.765 | 70.0 | 60.3 | 4.2 | 98.8 | 60.6 | 0.053 |
| NLR>8.5+ Albumin<33g/L | 0.792 | 38.8 | 89.8 | 63.3 | 76.4 | 73.9 | 0.000 |
Adjustments: age and sex.
Abbreviations: NLR, neutrophil to lymphocyte ratio; CRP, C-reactive protein; LOS, length of hospital stay; PPV, positive predictive value; NPV, negative predictive value.