Table 5. Prognostic properties of serum lactate (cutoff > 2.6 mmol/L).
| Category | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|
| (95% CI) | (95% CI) | (95% CI) | (95% CI) | |
| All patients | 56.7 | 74.3 | 20.8 | 93.5 |
| (54.1–59.2) | (73.5–75.1) | (19.9–21.6) | (93.2–93.9) | |
| Patients with disease | 54.7 | 76.5 | 22.1 | 93.3 |
| (52.0–57.4) | (75.7–77.3) | (21.1–23.1) | (92.9–93.7) | |
| Patients with injury | 74.8 | 58.2 | 14.9 | 95.9 |
| (67.0–81.6) | (55.6–60.7) | (13.5–16.4) | (94.7–96.9) | |
| Patients with suspected infection | 58.2 | 76.6 | 19.9 | 94.8 |
| (54.9–61.4) | (75.7–77.5) | (18.8–21.0) | (94.5–95.2) | |
| Patients without suspected infection | 54.4 | 68.2 | 22.4 | 89.9 |
| (50.2–58.4) | (66.7–69.8) | (20.9–24.0) | (89.0–90.7) |
Abbreviations: CI, confidence interval; PPV, positive predictive value; NPV, negative predictive value