Classification performance (positive and negative predictive values, sensitivity and specificity) obtained with the models using the optimal risk thresholds
| Model | Risk threshold | PPV (95% CI) | NPV (95% CI) | Sensitivity (95% CI) | Specificity (95% CI) |
|---|---|---|---|---|---|
| ‘Mobile’ | 0.25 | 0.51 (0.48 to 0.55) | 0.85 (0.83 to 0.87) | 0.72 (0.68 to 0.75) | 0.71 (0.69 to 0.73) |
| ‘Baseline’ | 0.25 | 0.51 (0.48 to 0.55) | 0.82 (0.80 to 0.84) | 0.63 (0.59 to 0.67) | 0.74 (0.72 to 0.77) |
NPV, negative predictive value; PPV, positive predictive value.