Table 4 The diagnosis efficiency of PCT and CRP (GN group versus GP group)
Item | PCT | CRP |
|---|---|---|
Optimal cutoff | 1.03 ng/mL | 34.02 mg/L |
AUC (95% CI) | 0.689 (0.591–0.786) | 0.611 (0.505–0.717) |
Standard error | 0.050 | 0.054 |
Sensitivity, % (95% CI) | 75.00 (63.91–83.56) | 42.86 (30.02–56.73) |
Specificity, % (95% CI) | 61.22 (47.25–73.57) | 81.94 (71.52–89.13) |
Diagnostic accuracy, % (95% CI) | 69.42(57.16–79.51) | 58.69 (46.83–69.85) |
Positive predictive value, % (95% CI) | 73.97 (64.03–82.29) | 77.71 (60.77–88.46) |
Negative predictive value, % (95% CI) | 62.50 (47.12–75.28) | 49.39 (41.02–58.37) |
Positive likelihood ratio, (95% CI) | 1.93 (1.21–3.16) | 2.37 (1.05–5.22) |
Negative likelihood ratio, (95% CI) | 0.41 (0.22–0.76) | 0.70(0.49–0.98) |
Diagnostic odds ratio, (95% CI) | 4.73 (1.59–14.14) | 3.40 (1.08–10.75) |
Youden’s index (%) | 36.22 | 24.80 |
P value | < 0.001 | 0.039 |