Table 3 Result of cut-point selection with different methods by CRP and their diagnostic properties
Methods | Cut-point (mg/L) | Se (95%CI) | Sp (95%CI) | PPV (95%CI) | NPV (95%CI) | LR +  (95%CI) | LR- (95%CI) | DOR (95%CI) |
|---|---|---|---|---|---|---|---|---|
Youden | 7 | 0.67 (0.47,0.82) | 0.83 (0.65,0.94) | 0.80 (0.59,0.93) | 0.71 (0.53,0.85) | 4 (1.17,13.58) | 0.40 (0.12,1.36) | 10 (2.94,33.95) |
Euclidian | 7 | 0.67 (0.47,0.82) | 0.83 (0.65,0.94) | 0.80 (0.59,0.93) | 0.71 (0.53,0.85) | 4 (1.17,13.58) | 0.40 (0.12,1.36) | 10 (2.94,33.95) |
Product | 7 | 0.67 (0.47,0.82) | 0.83 (0.65,0.94) | 0.80 (0.59,0.93) | 0.71 (0.53,0.85) | 4 (1.17,13.58) | 0.40 (0.12,1.36) | 10 (2.94,33.95) |
DOR | 10 | 0.50 (0.31, 0.68) | 0.97 (0.82, 0.99) | 0.94 (0.69, 0.99) | 0.66 (0.50, 0.79) | 15 (1.81,124.59) | 0.52 (0.06,4.30) | 29 (3.49,240.81) |
IU | 6 | 0.77 (0.57,0.90) | 0.70 (0.51,0.85) | 0.72 (0.53,0.86) | 0.75 (0.55,0.89) | 2.56 (0.77,8.55) | 0.33 (0.90,1.09) | 7.67 (2.95,32.82) |