Table 4 Number of patients according to level of lactate, using a range of cut-off values, and mortality plus sensitivities and specificities
From: Statistics review 13: Receiver operating characteristic curves
Lactate (mmol/l) | Died | Survived | Sensitivity | Specificity | Youden's index (J) | 1 – specificity |
|---|---|---|---|---|---|---|
>0 | 126 | 1265 | 1 | 0 | 0 | 1 |
>1 | 114 | 996 | 0.90 | 0.21 | 0.12 | 0.79 |
>1.5 | 81 | 591 | 0.64 | 0.53 | 0.18 | 0.47 |
>2 | 58 | 329 | 0.46 | 0.74 | 0.20 | 0.26 |
>3 | 37 | 131 | 0.29 | 0.90 | 0.19 | 0.10 |
>5 | 19 | 27 | 0.15 | 0.98 | 0.13 | 0.02 |
>25 | 0 | 0 | 0 | 1 | 0 | 0 |
Number in sample | 126 | 1265 | Â | Â | Â | Â |