Table 4.
Predicting performance of admission blood lactate and PRISM III for in-hospital mortality
| AUC | 95% CI | P value | Optimal cut-off value | Sensitivity | Specificity | |
|---|---|---|---|---|---|---|
| Admission blood lactate |
0.79 |
0.74-0.84 |
<0.001 |
5.55 mmol/l |
61% |
86% |
| PRISM III score |
0.82 |
0.78-0.86 |
<0.001 |
7.5 |
68% |
82% |
| Blood lactate combined with PRISM III |
0.86 |
0.83-0.90 |
<0.001 |
|
63% |
93% |
|
P value (comparison of the difference between AUCs) | ||||||
|
p = 0.318 (between blood lactate and PRISM III) | ||||||
|
p = 0.135 (between blood lactate combined with PRISM III and PRISM III alone) | ||||||
| p = 0.018 (between blood lactate combined with PRISM III and blood lactate alone) | ||||||
AUC, area under the receiver-operating-characteristic curve; CI, confidence interval; PRISM III, pediatric risk of mortality III.