Table 3 Descriptive statistics of schizontaemia, lactate and C-reactive protein as predictors for severe malaria
From: The prognostic value of schizontaemia in imported Plasmodium falciparum malaria
| Â | Schizontaemia (presence) | Plasma lactate (mmol/L) | C-reactive protein (mg/L) |
|---|---|---|---|
Number | 401 | 240 | 381 |
Median (range) | N/A | 1.6 (0.5-6.2) | 98 (5–476) |
Mean | N/A | 1.9 | 111 |
Standard deviation | N/A | 1.05 | 78 |
Optimal cut-off | N/A | ≥1.7 | ≥142 |
Sensitivity | 0.53 (0.40-0.66) | 0.80 (0.67-0.89) | 0.76 (0.63-0.86) |
Specificity | 0.95 (0.92-0.97) | 0.63 (0.55-0.70) | 0.75 (0.70-0.80) |
Youden’s index | 0.48 | 0.43 | 0.51 |
PPV | 0.67 (0.52-0.80) | 0.39 (0.30-0.49) | 0.35 (0.27-0.45) |
NPV | 0.92 (0.88-0.94) | 0.91 (0.85-0.95) | 0.95 (0.91-0.97) |