Diagnostic accuracy of the volumetric impedance phase shift spectroscopy device
| Sensitivity | Specificity | AUC | LR+ | LR− | PPV | NPV | |
| Severe strokes among all strokes | 93% (95% CI 83 to 98) | 92% (95% CI 75 to 99) | 0.93 (95% CI 0.85 to 0.97) | 12.09 (95% CI 3.2 to 45.9) | 0.076 (95% CI 0.03 to 0.2) | 96% (95% CI 88 to 99) | 86% (95% CI 70 to 94) |
| Severe strokes among all evaluated subjects | 93% (95% CI 83 to 98) | 87% (95% CI 81 to 92) | 0.93 (95% CI 0.89 to 0.96) | 7.20 (95% CI 4.9 to 10.6) | 0.081 (95% CI 0.03 to 0.2) | 70% (95% CI 61 to 77) | 98% (95% CI 94 to 99) |
LR +, positive likelihood ratio; LR−, negative likelihood ratio; NPV, negative predictive value; PPV, positive predictive value.