Table 3 Comparison of AUC and Efficiency of IL-6,WBC, CRP and PCT in the Diagnosis of Postoperative Pneumonia
Variable | AUC (95%CI) | Cut-off | Sensitivity | Specificity |
|---|---|---|---|---|
IL-6 (pg/ml) | ||||
POD1 | 0.78 (0.71,0.83) | 363.23 | 0.79 | 0.7 |
POD2 | 0.77 (0.71,0.82) | 94.24 | 0.91 | 0.53 |
POD3 | 0.69 (0.61,0.76) | 71.53 | 0.5 | 0.81 |
POD4 | 0.65 (0.57,0.72) | 24.32 | 0.69 | 0.58 |
POD5 | 0.65 (0.57,0.72) | 20.58 | 0.71 | 0.57 |
WBC (109/L) | ||||
POD1 | 0.45 (0.38, 0.53) | 6.15 | 0.98 | 0.03 |
POD2 | 0.44 (0.36, 0.52) | 23.45 | 0.05 | 0.99 |
POD3 | 0.43 (0.35, 0.50) | 17.05 | 0.07 | 0.95 |
POD4 | 0.49 (0.41, 0.57) | 8.85 | 0.44 | 0.62 |
POD5 | 0.48 (0.39, 0.56) | 10.05 | 0.23 | 0.83 |
CRP (mg/L) | ||||
POD1 | 0.48(0.39,0.56) | 62.52 | 0.34 | 0.72 |
POD2 | 0.63(0.56,0.70) | 133.93 | 0.66 | 0.59 |
POD3 | 0.77(0.70,0.84) | 68.18 | 0.94 | 0.56 |
POD4 | 0.69(0.62,0.75) | 51.23 | 0.91 | 0.41 |
POD5 | 0.67(0.60,0.74) | 49.36 | 0.62 | 0.7 |
PCT (ng/mL) | ||||
POD1 | 0.59(0.52,0.67) | 3.28 | 0.65 | 0.54 |
POD2 | 0.61(0.53, 0.69) | 3.3 | 0.62 | 0.6 |
POD3 | 0.68 (0.60, 0.75) | 1.56 | 0.69 | 0.61 |
POD4 | 0.63 (0.55, 0.71) | 0.86 | 0.69 | 0.55 |
POD5 | 0.63 (0.56, 0.70) | 0.44 | 0.71 | 0.51 |