Sensitivity, specificity, PPV and NPV for LHS (A) versus GBS (B)
(A) | |||||
Cut-off LHS | Sensitivity | Specificity | PPV | NPV | False positive rate |
−4 | 1.00 | 0.05 | 0.27 | 1.00 | 0.95 |
−3 | 1.00 | 0.09 | 0.28 | 1.00 | 0.91 |
−2 | 1.00 | 0.18 | 0.30 | 1.00 | 0.82 |
−1 | 1.00 | 0.20 | 0.31 | 1.00 | 0.80 |
0 | 1.00 | 0.25 | 0.32 | 1.00 | 0.75 |
1 | 0.98 | 0.42 | 0.35 | 0.98 | 0.58 |
2 | 0.95 | 0.47 | 0.37 | 0.96 | 0.53 |
3 | 0.93 | 0.55 | 0.38 | 0.94 | 0.45 |
4 | 0.89 | 0.67 | 0.41 | 0.91 | 0.33 |
5 | 0.81 | 0.67 | 0.47 | 0.91 | 0.33 |
6 | 0.77 | 0.72 | 0.49 | 0.90 | 0.28 |
7 | 0.71 | 0.79 | 0.54 | 0.89 | 0.21 |
8 | 0.61 | 0.82 | 0.54 | 0.86 | 0.18 |
9 | 0.37 | 0.92 | 0.61 | 0.80 | 0.08 |
10 | 0.29 | 0.96 | 0.70 | 0.79 | 0.04 |
11 | 0.19 | 0.97 | 0.68 | 0.77 | 0.03 |
12 | 0.07 | 0.99 | 0.80 | 0.75 | 0.01 |
13 | 0.04 | 1.00 | 0.83 | 0.75 | 0.00 |
(A) | |||||
Cut−off GBS | Sensitivity | Specificity | PPV | NPV | False positive rate |
0 | 1.00 | 0.00 | 0.26 | 0.00 | 1.00 |
1 | 1.00 | 0.03 | 0.26 | 1.00 | 0.97 |
2 | 1.00 | 0.09 | 0.28 | 1.00 | 0.91 |
3 | 0.98 | 0.18 | 0.30 | 0.97 | 0.82 |
4 | 0.96 | 0.27 | 0.31 | 0.94 | 0.73 |
5 | 0.89 | 0.35 | 0.33 | 0.90 | 0.65 |
6 | 0.84 | 0.53 | 0.35 | 0.89 | 0.47 |
7 | 0.78 | 0.62 | 0.37 | 0.87 | 0.38 |
8 | 0.71 | 0.62 | 0.40 | 0.86 | 0.38 |
9 | 0.67 | 0.70 | 0.44 | 0.86 | 0.30 |
10 | 0.60 | 0.73 | 0.44 | 0.84 | 0.27 |
11 | 0.49 | 0.79 | 0.45 | 0.81 | 0.21 |
12 | 0.36 | 0.85 | 0.45 | 0.79 | 0.15 |
13 | 0.23 | 0.90 | 0.46 | 0.77 | 0.10 |
14 | 0.13 | 0.94 | 0.42 | 0.75 | 0.06 |
15 | 0.07 | 0.97 | 0.42 | 0.75 | 0.03 |
16 | 0.04 | 0.98 | 0.50 | 0.75 | 0.02 |
17 | 0.04 | 0.99 | 0.57 | 0.75 | 0.01 |
18 | 0.00 | 0.99 | 0.00 | 0.74 | 0.01 |
.GBS, Glasgow Blatchford Score; LHS, London Haemostat Score; NPV, negative predictive value; PPV, positive predictive value.