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Characteristics of alerts for predicting emergency department visits.
| Home aides’ visits with subsequent alerts (n=2656) | Accuracy assessment (95% CI) |
| Sensitivity, % (95% CI) | 83 (72-94) |
| Specificity, % (95% CI) | 86 (85-87) |
| Positive likelihood ratio | 5.87 (4.99-6.92) |
| Negative likelihood ratio | 0.20 (0.11-0.38) |
| Positive predictive value, % (95% CI) | 9.4 (6.5-12.2) |
| Negative predictive value, % (95% CI) | 99.6 (99.3-99.9) |
