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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